should be ready.

code/modules/clothing/glasses/_glasses.dm

@@ -45,7 +45,7 @@
 /obj/item/clothing/glasses/proc/thermal_overload()
 	if(ishuman(src.loc))
 		var/mob/living/carbon/human/H = src.loc
-		if(!(H.has_trait(TRAIT_BLIND)))
+		if(!(HAS_TRAIT(H, TRAIT_BLIND)))
 			if(H.glasses == src)
 				to_chat(H, "<span class='danger'>[src] overloads and blinds you!</span>")
 				H.flash_act(visual = 1)

code/modules/clothing/neck/_neck.dm

@@ -66,7 +66,7 @@
 			var/obj/item/organ/heart/heart = M.getorganslot(ORGAN_SLOT_HEART)
 			var/obj/item/organ/lungs/lungs = M.getorganslot(ORGAN_SLOT_LUNGS)
 
-			if(!(M.stat == DEAD || (M.has_trait(TRAIT_FAKEDEATH))))
+			if(!(M.stat == DEAD || (HAS_TRAIT(M, TRAIT_FAKEDEATH))))
 				if(heart && istype(heart))
 					heart_strength = "<span class='danger'>an unstable</span>"
 					if(heart.beating)

code/modules/clothing/shoes/taeclowndo.dm

@@ -13,7 +13,7 @@
 	if(!ishuman(user))
 		return
 	var/mob/living/carbon/human/H = user
-	if(!(H.has_trait(TRAIT_CLUMSY)) && !(H.mind && H.mind.assigned_role == "Clown"))
+	if(!(HAS_TRAIT(H, TRAIT_CLUMSY)) && !(H.mind && H.mind.assigned_role == "Clown"))
 		return
 	if(slot == SLOT_SHOES)
 		spells = new