[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/modules/reagents/chemistry/reagents/toxin_reagents.dm

@@ -100,16 +100,14 @@
 
 /datum/reagent/toxin/lexorin/on_mob_life(mob/living/M)
 	. = TRUE
-	var/mob/living/carbon/C
-	if(iscarbon(M))
-		C = M
-		CHECK_DNA_AND_SPECIES(C)
-		if(NOBREATH in C.dna.species.species_traits)
-			. = FALSE
+
+	if(M.has_trait(TRAIT_NOBREATH))
+		. = FALSE
 
 	if(.)
 		M.adjustOxyLoss(5, 0)
-		if(C)
+		if(iscarbon(M))
+			var/mob/living/carbon/C = M
 			C.losebreath += 2
 		if(prob(20))
 			M.emote("gasp")