Merge pull request #15607 from Putnam3145/auxmos-1

Updates auxmos to 1.0 (plus other atmos stuff with it)

code/datums/mutations/actions.dm

@@ -205,6 +205,16 @@
 	synchronizer_coeff = 1
 	var/reek = 200
 
+/datum/mutation/human/olfaction/on_acquiring(mob/living/carbon/human/owner)
+	if(..() || HAS_TRAIT(owner, TRAIT_ANOSMIA))
+		return TRUE
+	ADD_TRAIT(owner, TRAIT_GOODSMELL, GENETIC_MUTATION)
+
+/datum/mutation/human/olfaction/on_losing(mob/living/carbon/human/owner)
+	if(..())
+		return
+	REMOVE_TRAIT(owner, TRAIT_GOODSMELL, GENETIC_MUTATION)
+
 /datum/mutation/human/olfaction/modify()
 	if(power)
 		var/obj/effect/proc_holder/spell/targeted/olfaction/S = power

code/datums/traits/negative.dm

@@ -416,3 +416,12 @@ GLOBAL_LIST_EMPTY(family_heirlooms)
 	. = ..()
 	var/mob/living/carbon/human/H = quirk_holder
 	H?.cure_trauma_type(/datum/brain_trauma/severe/monophobia, TRAUMA_RESILIENCE_ABSOLUTE)
+
+/datum/quirk/no_smell
+	name = "Anosmia"
+	desc = "You can't smell anything! You won't be able to detect certain colorless gases."
+	value = -1
+	mob_trait = TRAIT_ANOSMIA
+	gain_text = "<span class='notice'>You can't smell anything!</span>"
+	lose_text = "<span class='notice'>You can smell again!</span>"
+	medical_record_text = "Patient suffers from anosmia and is incapable of smelling gases or particulates."