makes it a trait

code/game/objects/structures/ghost_role_spawners.dm

@@ -31,7 +31,7 @@
 	return ..()
 
 /obj/effect/mob_spawn/human/seed_vault/special(mob/living/carbon/human/new_spawn)
-	new_spawn.exempt_from_health_events = TRUE
+	ADD_TRAIT(new_spawn,TRAIT_EXEMPT_HEALTH_EVENTS,GHOSTROLE_TRAIT)
 //Ash walker eggs: Spawns in ash walker dens in lavaland. Ghosts become unbreathing lizards that worship the Necropolis and are advised to retrieve corpses to create more ash walkers.
 
 /obj/effect/mob_spawn/human/ash_walker
@@ -254,7 +254,7 @@
 	return ..()
 
 /obj/effect/mob_spawn/human/hermit/special(mob/living/carbon/human/new_spawn)
-	new_spawn.exempt_from_health_events = TRUE
+	ADD_TRAIT(new_spawn,TRAIT_EXEMPT_HEALTH_EVENTS,GHOSTROLE_TRAIT)
 
 //Broken rejuvenation pod: Spawns in animal hospitals in lavaland. Ghosts become disoriented interns and are advised to search for help.
 /obj/effect/mob_spawn/human/doctor/alive/lavaland
@@ -359,7 +359,7 @@
 	..()
 
 /obj/effect/mob_spawn/human/hotel_staff/special(mob/living/carbon/human/new_spawn)
-	new_spawn.exempt_from_health_events = TRUE
+	ADD_TRAIT(new_spawn,TRAIT_EXEMPT_HEALTH_EVENTS,GHOSTROLE_TRAIT)
 
 /obj/effect/mob_spawn/human/demonic_friend
 	name = "Essence of friendship"
@@ -626,7 +626,7 @@
 		O.equip(new_spawn, FALSE, new_spawn.client)
 		SSjob.equip_loadout(null, new_spawn, FALSE)
 		SSquirks.AssignQuirks(new_spawn, new_spawn.client, TRUE, TRUE, null, FALSE, new_spawn)
-		new_spawn.exempt_from_health_events = TRUE
+		ADD_TRAIT(new_spawn,TRAIT_EXEMPT_HEALTH_EVENTS,GHOSTROLE_TRAIT)
 
 /datum/outfit/ghostcafe
 	name = "ID, jumpsuit and shoes"