[MIRROR] Converts several species traits into generic traits (#5710)

* Converts several species traits into generic traits

* Update traits.dm

* Update mousetrap.dm

* Update corporate.dm

* Update jellypeople.dm

* snowflake fix

code/datums/diseases/_MobProcs.dm

@@ -133,14 +133,10 @@
 /mob/living/carbon/AirborneContractDisease(datum/disease/D)
 	if(internal)
 		return
-	..()
-
-/mob/living/carbon/human/AirborneContractDisease(datum/disease/D)
-	if(dna && (NOBREATH in dna.species.species_traits))
+	if(has_trait(TRAIT_NOBREATH))
 		return
 	..()
 
-
 //Proc to use when you 100% want to infect someone, as long as they aren't immune
 /mob/proc/ForceContractDisease(datum/disease/D)
 	if(!CanContractDisease(D))
@@ -151,7 +147,7 @@
 /mob/living/carbon/human/CanContractDisease(datum/disease/D)
 
 	if(dna)
-		if((VIRUSIMMUNE in dna.species.species_traits) && !D.bypasses_immunity)
+		if(has_trait(TRAIT_VIRUSIMMUNE) && !D.bypasses_immunity)
 			return FALSE
 
 		var/can_infect = FALSE