diff --git a/code/__DEFINES/traits/declarations.dm b/code/__DEFINES/traits/declarations.dm
index b7aabbd1c39..4e91b31da8c 100644
--- a/code/__DEFINES/traits/declarations.dm
+++ b/code/__DEFINES/traits/declarations.dm
@@ -733,6 +733,7 @@ Remember to update _globalvars/traits.dm if you're adding/removing/renaming trai
 
 //quirk traits
 #define TRAIT_ALCOHOL_TOLERANCE "alcohol_tolerance"
+#define TRAIT_ANOSMIA "anosmia"
 #define TRAIT_HEAVY_DRINKER "heavy_drinker"
 #define TRAIT_AGEUSIA "ageusia"
 #define TRAIT_HEAVY_SLEEPER "heavy_sleeper"
diff --git a/code/_globalvars/traits/_traits.dm b/code/_globalvars/traits/_traits.dm
index b2737fca837..2b00638e348 100644
--- a/code/_globalvars/traits/_traits.dm
+++ b/code/_globalvars/traits/_traits.dm
@@ -126,6 +126,7 @@ GLOBAL_LIST_INIT(traits_by_type, list(
 		"TRAIT_ALWAYS_WANTED" = TRAIT_ALWAYS_WANTED,
 		"TRAIT_ANALGESIA" = TRAIT_ANALGESIA,
 		"TRAIT_ANGELIC" = TRAIT_ANGELIC,
+		"TRAIT_ANOSMIA" = TRAIT_ANOSMIA,
 		"TRAIT_ANTENNAE" = TRAIT_ANTENNAE,
 		"TRAIT_ANTICONVULSANT" = TRAIT_ANTICONVULSANT,
 		"TRAIT_ANTIMAGIC" = TRAIT_ANTIMAGIC,
diff --git a/code/_globalvars/traits/admin_tooling.dm b/code/_globalvars/traits/admin_tooling.dm
index bacd7e3bc46..354449cfd55 100644
--- a/code/_globalvars/traits/admin_tooling.dm
+++ b/code/_globalvars/traits/admin_tooling.dm
@@ -29,6 +29,7 @@ GLOBAL_LIST_INIT(admin_visible_traits, list(
 		"TRAIT_AGENDER" = TRAIT_AGENDER,
 		"TRAIT_AGEUSIA" = TRAIT_AGEUSIA,
 		"TRAIT_ALCOHOL_TOLERANCE" = TRAIT_ALCOHOL_TOLERANCE,
+		"TRAIT_ANOSMIA" = TRAIT_ANOSMIA,
 		"TRAIT_ANTIMAGIC" = TRAIT_ANTIMAGIC,
 		"TRAIT_ANXIOUS" = TRAIT_ANXIOUS,
 		"TRAIT_BADDNA" = TRAIT_BADDNA,
diff --git a/code/datums/components/bakeable.dm b/code/datums/components/bakeable.dm
index a745be2b1a5..afc71936f1b 100644
--- a/code/datums/components/bakeable.dm
+++ b/code/datums/components/bakeable.dm
@@ -90,11 +90,24 @@
 	baked_result.pixel_y = original_object.pixel_y
 	used_tray.AddToPlate(baked_result)
 
+	var/list/asomnia_hadders = list()
+	for(var/mob/smeller in get_hearers_in_view(DEFAULT_MESSAGE_RANGE, used_oven))
+		if(HAS_TRAIT(smeller, TRAIT_ANOSMIA))
+			asomnia_hadders += smeller 
+
 	if(positive_result)
-		used_oven.visible_message(span_notice("You smell something great coming from [used_oven]."), blind_message = span_notice("You smell something great..."))
+		used_oven.visible_message(
+			span_notice("You smell something great coming from [used_oven]."), 
+			blind_message = span_notice("You smell something great..."),
+			ignored_mobs = asomnia_hadders,
+		)
 		BLACKBOX_LOG_FOOD_MADE(baked_result.type)
 	else
-		used_oven.visible_message(span_warning("You smell a burnt smell coming from [used_oven]."), blind_message = span_warning("You smell a burnt smell..."))
+		used_oven.visible_message(
+			span_warning("You smell a burnt smell coming from [used_oven]."),
+			blind_message = span_warning("You smell a burnt smell..."),
+			ignored_mobs = asomnia_hadders,
+		)
 	SEND_SIGNAL(parent, COMSIG_ITEM_BAKED, baked_result)
 	qdel(parent)
 
diff --git a/code/datums/diseases/advance/symptoms/fire.dm b/code/datums/diseases/advance/symptoms/fire.dm
index f428abdb016..0708841fca0 100644
--- a/code/datums/diseases/advance/symptoms/fire.dm
+++ b/code/datums/diseases/advance/symptoms/fire.dm
@@ -71,7 +71,10 @@
 	if(prob(33.33))
 		living_mob.show_message(span_hear("You hear a crackling noise."), type = MSG_AUDIBLE)
 	else
-		to_chat(living_mob, span_warning("[pick("You feel hot.", "You smell smoke.")]"))
+		if(HAS_TRAIT(living_mob, TRAIT_ANOSMIA)) //Anosmia quirk holder can't smell anything.
+			to_chat(living_mob, span_warning("You feel hot."))
+		else
+			to_chat(living_mob, span_warning("[pick("You feel hot.", "You smell smoke.")]"))
 
 /*
 Alkali perspiration
diff --git a/code/datums/mutations/olfaction.dm b/code/datums/mutations/olfaction.dm
index e014806233a..305f6d16e83 100644
--- a/code/datums/mutations/olfaction.dm
+++ b/code/datums/mutations/olfaction.dm
@@ -40,6 +40,10 @@
 		to_chat(owner, span_warning("You have no nose!"))
 		return FALSE
 
+	if(HAS_TRAIT(living_cast_on, TRAIT_ANOSMIA)) //Anosmia quirk holders can't smell anything
+		to_chat(owner, span_warning("You can't smell!"))
+		return FALSE
+
 	return TRUE
 
 /datum/action/cooldown/spell/olfaction/cast(mob/living/cast_on)
diff --git a/code/datums/quirks/negative_quirks/anosmia.dm b/code/datums/quirks/negative_quirks/anosmia.dm
new file mode 100644
index 00000000000..bbbf599aeaa
--- /dev/null
+++ b/code/datums/quirks/negative_quirks/anosmia.dm
@@ -0,0 +1,9 @@
+/datum/quirk/item_quirk/anosmia
+	name = "Anosmia"
+	desc = "For some reason, you can't smell anything."
+	icon = FA_ICON_HEAD_SIDE_COUGH_SLASH
+	value = -2
+	mob_trait = TRAIT_ANOSMIA
+	gain_text = span_notice("You find yourself unable to smell anything!")
+	lose_text = span_danger("Suddenly, you can smell again!")
+	medical_record_text = "Patient has lost their sensation of smell."
diff --git a/code/modules/antagonists/changeling/powers/pheromone_receptors.dm b/code/modules/antagonists/changeling/powers/pheromone_receptors.dm
index 18fda4bf4ff..0e468159a3c 100644
--- a/code/modules/antagonists/changeling/powers/pheromone_receptors.dm
+++ b/code/modules/antagonists/changeling/powers/pheromone_receptors.dm
@@ -23,6 +23,9 @@
 /datum/action/changeling/pheromone_receptors/sting_action(mob/living/carbon/user)
 	..()
 	var/datum/antagonist/changeling/changeling = IS_CHANGELING(user)
+	if(HAS_TRAIT(user, TRAIT_ANOSMIA)) //Anosmia quirk holders can't smell anything
+		to_chat(user, span_warning("We can't smell!"))
+		return
 	if(!receptors_active)
 		to_chat(user, span_warning("We search for the scent of any nearby changelings."))
 		changeling.chem_recharge_slowdown += 0.25
diff --git a/code/modules/food_and_drinks/machinery/deep_fryer.dm b/code/modules/food_and_drinks/machinery/deep_fryer.dm
index 0ca70ccf840..d01e24a1e81 100644
--- a/code/modules/food_and_drinks/machinery/deep_fryer.dm
+++ b/code/modules/food_and_drinks/machinery/deep_fryer.dm
@@ -146,7 +146,11 @@ GLOBAL_LIST_INIT(oilfry_blacklisted_items, typecacheof(list(
 		audible_message(span_notice("[src] dings!"))
 	else if (cook_time >= DEEPFRYER_BURNTIME && !frying_burnt)
 		frying_burnt = TRUE
-		visible_message(span_warning("[src] emits an acrid smell!"))
+		var/list/asomnia_hadders = list()
+		for(var/mob/smeller in get_hearers_in_view(DEFAULT_MESSAGE_RANGE, src))
+			if(HAS_TRAIT(smeller, TRAIT_ANOSMIA))
+				asomnia_hadders += smeller
+		visible_message(span_warning("[src] emits an acrid smell!"), ignored_mobs = asomnia_hadders)
 
 	use_energy(active_power_usage)
 
diff --git a/code/modules/food_and_drinks/machinery/oven.dm b/code/modules/food_and_drinks/machinery/oven.dm
index 517e25c6dcb..8135dd8308f 100644
--- a/code/modules/food_and_drinks/machinery/oven.dm
+++ b/code/modules/food_and_drinks/machinery/oven.dm
@@ -90,7 +90,11 @@
 		baked_item.fire_act(1000) //Hot hot hot!
 
 		if(SPT_PROB(10, seconds_per_tick))
-			visible_message(span_danger("You smell a burnt smell coming from [src]!"))
+			var/list/asomnia_hadders = list()
+			for(var/mob/smeller in get_hearers_in_view(DEFAULT_MESSAGE_RANGE, src))
+				if(HAS_TRAIT(smeller, TRAIT_ANOSMIA))
+					asomnia_hadders += smeller
+			visible_message(span_danger("You smell a burnt smell coming from [src]!"), ignored_mobs = asomnia_hadders)
 	set_smoke_state(worst_cooked_food_state)
 	update_appearance()
 	use_energy(active_power_usage)
diff --git a/code/modules/mining/lavaland/megafauna_loot.dm b/code/modules/mining/lavaland/megafauna_loot.dm
index d9074800e4c..e6caf573f00 100644
--- a/code/modules/mining/lavaland/megafauna_loot.dm
+++ b/code/modules/mining/lavaland/megafauna_loot.dm
@@ -291,7 +291,10 @@
 		if(prob(7.5))
 			wearer.cause_hallucination(/datum/hallucination/oh_yeah, "H.E.C.K suit", haunt_them = TRUE)
 		else
-			to_chat(wearer, span_warning("[pick("You hear faint whispers.","You smell ash.","You feel hot.","You hear a roar in the distance.")]"))
+			if(HAS_TRAIT(wearer, TRAIT_ANOSMIA)) //Anosmia quirk holder cannot fell any smell
+				to_chat(wearer, span_warning("[pick("You hear faint whispers.","You feel hot.","You hear a roar in the distance.")]"))
+			else
+				to_chat(wearer, span_warning("[pick("You hear faint whispers.","You smell ash.","You feel hot.","You hear a roar in the distance.")]"))
 
 /obj/item/clothing/head/hooded/hostile_environment
 	name = "H.E.C.K. helmet"
diff --git a/code/modules/mob/living/carbon/life.dm b/code/modules/mob/living/carbon/life.dm
index fea1de2ecc6..d80a91d0af8 100644
--- a/code/modules/mob/living/carbon/life.dm
+++ b/code/modules/mob/living/carbon/life.dm
@@ -280,7 +280,8 @@
 	if(!can_breathe_vacuum && (o2_pp < safe_oxygen_min))
 		// Breathe insufficient amount of O2.
 		oxygen_used = handle_suffocation(o2_pp, safe_oxygen_min, breath_gases[/datum/gas/oxygen][MOLES])
-		throw_alert(ALERT_NOT_ENOUGH_OXYGEN, /atom/movable/screen/alert/not_enough_oxy)
+		if(!HAS_TRAIT(src, TRAIT_ANOSMIA))
+			throw_alert(ALERT_NOT_ENOUGH_OXYGEN, /atom/movable/screen/alert/not_enough_oxy)
 	else
 		// Enough oxygen to breathe.
 		failed_last_breath = FALSE
@@ -307,7 +308,8 @@
 		if(!co2overloadtime)
 			co2overloadtime = world.time
 		else if((world.time - co2overloadtime) > 12 SECONDS)
-			throw_alert(ALERT_TOO_MUCH_CO2, /atom/movable/screen/alert/too_much_co2)
+			if(!HAS_TRAIT(src, TRAIT_ANOSMIA))
+				throw_alert(ALERT_TOO_MUCH_CO2, /atom/movable/screen/alert/too_much_co2)
 			Unconscious(6 SECONDS)
 			// Lets hurt em a little, let them know we mean business.
 			adjustOxyLoss(3)
@@ -325,7 +327,8 @@
 		// Plasma side-effects.
 		var/ratio = (breath_gases[/datum/gas/plasma][MOLES] / safe_plas_max) * 10
 		adjustToxLoss(clamp(ratio, MIN_TOXIC_GAS_DAMAGE, MAX_TOXIC_GAS_DAMAGE))
-		throw_alert(ALERT_TOO_MUCH_PLASMA, /atom/movable/screen/alert/too_much_plas)
+		if(!HAS_TRAIT(src, TRAIT_ANOSMIA))
+			throw_alert(ALERT_TOO_MUCH_PLASMA, /atom/movable/screen/alert/too_much_plas)
 	else
 		// Reset side-effects.
 		clear_alert(ALERT_TOO_MUCH_PLASMA)
@@ -356,6 +359,8 @@
 			miasma_disease.name = "Unknown"
 			ForceContractDisease(miasma_disease, make_copy = TRUE, del_on_fail = TRUE)
 		// Miasma side-effects.
+		if (HAS_TRAIT(src, TRAIT_ANOSMIA)) //We can't feel miasma without sense of smell
+			return
 		switch(miasma_pp)
 			if(0.25 to 5)
 				// At lower pp, give out a little warning
@@ -386,7 +391,8 @@
 	if(n2o_pp > n2o_para_min)
 		// More N2O, more severe side-effects. Causes stun/sleep.
 		n2o_euphoria = EUPHORIA_ACTIVE
-		throw_alert(ALERT_TOO_MUCH_N2O, /atom/movable/screen/alert/too_much_n2o)
+		if(!HAS_TRAIT(src, TRAIT_ANOSMIA))
+			throw_alert(ALERT_TOO_MUCH_N2O, /atom/movable/screen/alert/too_much_n2o)
 		// give them one second of grace to wake up and run away a bit!
 		if(!HAS_TRAIT(src, TRAIT_SLEEPIMMUNE))
 			Unconscious(6 SECONDS)
diff --git a/code/modules/reagents/chemistry/reagents/food_reagents.dm b/code/modules/reagents/chemistry/reagents/food_reagents.dm
index 98a5c823c06..a5b5cef2e8c 100644
--- a/code/modules/reagents/chemistry/reagents/food_reagents.dm
+++ b/code/modules/reagents/chemistry/reagents/food_reagents.dm
@@ -535,7 +535,10 @@
 	. = ..()
 	if(isvampire(affected_mob)) //incapacitating but not lethal. Unfortunately, vampires cannot vomit.
 		if(SPT_PROB(min((current_cycle-1)/2, 12.5), seconds_per_tick))
-			to_chat(affected_mob, span_danger("You can't get the scent of garlic out of your nose! You can barely think..."))
+			if(HAS_TRAIT(affected_mob, TRAIT_ANOSMIA))
+				to_chat(affected_mob, span_danger("You feel that something is wrong, your strength is leaving you! You can barely think..."))
+			else
+				to_chat(affected_mob, span_danger("You can't get the scent of garlic out of your nose! You can barely think..."))
 			affected_mob.Paralyze(10)
 			affected_mob.set_jitter_if_lower(20 SECONDS)
 	else
diff --git a/code/modules/reagents/reagent_containers/cups/glassbottle.dm b/code/modules/reagents/reagent_containers/cups/glassbottle.dm
index 4f7abbe6f20..a293aac7aa1 100644
--- a/code/modules/reagents/reagent_containers/cups/glassbottle.dm
+++ b/code/modules/reagents/reagent_containers/cups/glassbottle.dm
@@ -894,7 +894,8 @@
 	desc = "Fermented prison wine made from fruit, sugar, and despair. You probably shouldn't drink this around Security."
 	icon_state = "trashbag1" // pruno releases air as it ferments, we don't want to simulate this in atmos, but we can make it look like it did
 	for (var/mob/living/M in view(2, get_turf(src))) // letting people and/or narcs know when the pruno is done
-		to_chat(M, span_info("A pungent smell emanates from [src], like fruit puking out its guts."))
+		if(HAS_TRAIT(M, TRAIT_ANOSMIA))
+			to_chat(M, span_info("A pungent smell emanates from [src], like fruit puking out its guts."))
 		playsound(get_turf(src), 'sound/effects/bubbles2.ogg', 25, TRUE)
 
 /**
diff --git a/code/modules/surgery/organs/internal/lungs/_lungs.dm b/code/modules/surgery/organs/internal/lungs/_lungs.dm
index 8bba59d7987..a60cc243756 100644
--- a/code/modules/surgery/organs/internal/lungs/_lungs.dm
+++ b/code/modules/surgery/organs/internal/lungs/_lungs.dm
@@ -266,7 +266,8 @@
 
 	var/ratio = (breath.gases[/datum/gas/oxygen][MOLES] / safe_oxygen_max) * 10
 	breather.apply_damage(clamp(ratio, oxy_breath_dam_min, oxy_breath_dam_max), oxy_damage_type, spread_damage = TRUE)
-	breather.throw_alert(ALERT_TOO_MUCH_OXYGEN, /atom/movable/screen/alert/too_much_oxy)
+	if(!HAS_TRAIT(breather, TRAIT_ANOSMIA))
+		breather.throw_alert(ALERT_TOO_MUCH_OXYGEN, /atom/movable/screen/alert/too_much_oxy)
 
 /// Handles NOT having too much o2. only relevant if safe_oxygen_max has a value
 /obj/item/organ/internal/lungs/proc/safe_oxygen(mob/living/carbon/breather, datum/gas_mixture/breath, old_o2_pp)
@@ -285,7 +286,8 @@
 	if(nitro_pp < safe_nitro_min && !HAS_TRAIT(src, TRAIT_SPACEBREATHING))
 		// Suffocation side-effects.
 		// Not safe to check the old pp because of can_breath_vacuum
-		breather.throw_alert(ALERT_NOT_ENOUGH_NITRO, /atom/movable/screen/alert/not_enough_nitro)
+		if(!HAS_TRAIT(breather, TRAIT_ANOSMIA))
+			breather.throw_alert(ALERT_NOT_ENOUGH_NITRO, /atom/movable/screen/alert/not_enough_nitro)
 		var/gas_breathed = handle_suffocation(breather, nitro_pp, safe_nitro_min, breath.gases[/datum/gas/nitrogen][MOLES])
 		if(nitro_pp)
 			breathe_gas_volume(breath, /datum/gas/nitrogen, /datum/gas/carbon_dioxide, volume = gas_breathed)
@@ -318,7 +320,8 @@
 		breather.emote("cough")
 
 	if((world.time - breather.co2overloadtime) > 12 SECONDS)
-		breather.throw_alert(ALERT_TOO_MUCH_CO2, /atom/movable/screen/alert/too_much_co2)
+		if(!HAS_TRAIT(breather, TRAIT_ANOSMIA))
+			breather.throw_alert(ALERT_TOO_MUCH_CO2, /atom/movable/screen/alert/too_much_co2)
 		breather.Unconscious(6 SECONDS)
 		// Lets hurt em a little, let them know we mean business.
 		breather.apply_damage(3, co2_damage_type, spread_damage = TRUE)
@@ -337,7 +340,8 @@
 	// Suffocation side-effects.
 	if(plasma_pp < safe_plasma_min && !HAS_TRAIT(src, TRAIT_SPACEBREATHING))
 		// Could check old_plasma_pp but vacuum breathing hates me
-		breather.throw_alert(ALERT_NOT_ENOUGH_PLASMA, /atom/movable/screen/alert/not_enough_plas)
+		if(!HAS_TRAIT(breather, TRAIT_ANOSMIA))
+			breather.throw_alert(ALERT_NOT_ENOUGH_PLASMA, /atom/movable/screen/alert/not_enough_plas)
 		// Breathe insufficient amount of Plasma, exhale CO2.
 		var/gas_breathed = handle_suffocation(breather, plasma_pp, safe_plasma_min, breath.gases[/datum/gas/plasma][MOLES])
 		if(plasma_pp)
@@ -362,7 +366,8 @@
 
 	// If it's the first breath with too much CO2 in it, lets start a counter, then have them pass out after 12s or so.
 	if(old_plasma_pp < safe_plasma_max)
-		breather.throw_alert(ALERT_TOO_MUCH_PLASMA, /atom/movable/screen/alert/too_much_plas)
+		if(!HAS_TRAIT(breather, TRAIT_ANOSMIA))
+			breather.throw_alert(ALERT_TOO_MUCH_PLASMA, /atom/movable/screen/alert/too_much_plas)
 
 	var/ratio = (breath.gases[/datum/gas/plasma][MOLES] / safe_plasma_max) * 10
 	breather.apply_damage(clamp(ratio, plas_breath_dam_min, plas_breath_dam_max), plas_damage_type, spread_damage = TRUE)
@@ -466,6 +471,8 @@
 			miasma_disease.name = "Unknown"
 			breather.AirborneContractDisease(miasma_disease, TRUE)
 	// Miasma side effects
+	if (HAS_TRAIT(breather, TRAIT_ANOSMIA)) //Anosmia quirk holder cannot smell miasma, but can get diseases from it.
+		return
 	switch(miasma_pp)
 		if(0.25 to 5)
 			// At lower pp, give out a little warning
@@ -522,7 +529,8 @@
 
 	// More N2O, more severe side-effects. Causes stun/sleep.
 	if(old_n2o_pp < n2o_para_min)
-		breather.throw_alert(ALERT_TOO_MUCH_N2O, /atom/movable/screen/alert/too_much_n2o)
+		if(!HAS_TRAIT(breather, TRAIT_ANOSMIA))
+			breather.throw_alert(ALERT_TOO_MUCH_N2O, /atom/movable/screen/alert/too_much_n2o)
 	n2o_euphoria = EUPHORIA_ACTIVE
 
 	// give them one second of grace to wake up and run away a bit!
diff --git a/tgstation.dme b/tgstation.dme
index 9a7b0be49a0..61058989978 100644
--- a/tgstation.dme
+++ b/tgstation.dme
@@ -1752,6 +1752,7 @@
 #include "code\datums\quirks\negative_quirks\addict.dm"
 #include "code\datums\quirks\negative_quirks\all_nighter.dm"
 #include "code\datums\quirks\negative_quirks\allergic.dm"
+#include "code\datums\quirks\negative_quirks\anosmia.dm"
 #include "code\datums\quirks\negative_quirks\bad_back.dm"
 #include "code\datums\quirks\negative_quirks\bad_touch.dm"
 #include "code\datums\quirks\negative_quirks\big_hands.dm"