well that works

code/datums/elements/dusts_on_catatonia.dm

@@ -0,0 +1,25 @@
+/datum/element/dusts_on_catatonia
+	element_flags = ELEMENT_DETACH
+	var/list/mob/attached_mobs = list()
+
+/datum/element/dusts_on_catatonia/Attach(datum/target,penalize = FALSE)
+	. = ..()
+	if(!ismob(target))
+		return ELEMENT_INCOMPATIBLE
+	var/mob/M = target
+	if(!(M in attached_mobs))
+		attached_mobs += M
+	START_PROCESSING(SSprocessing,src)
+
+/datum/element/dusts_on_catatonia/Detach(mob/M)
+	. = ..()
+	if(M in attached_mobs)
+		attached_mobs -= M
+	if(!attached_mobs.len)
+		STOP_PROCESSING(SSprocessing,src)
+
+/datum/element/dusts_on_catatonia/process()
+	for(var/mob/M in attached_mobs)
+		if(!M.key && !M.get_ghost())
+			M.dust(force = TRUE)
+			Detach(M)

code/game/objects/structures/ghost_role_spawners.dm

@@ -627,6 +627,7 @@
 		SSjob.equip_loadout(null, new_spawn, FALSE)
 		SSquirks.AssignQuirks(new_spawn, new_spawn.client, TRUE, TRUE, null, FALSE, new_spawn)
 		new_spawn.AddElement(/datum/element/ghost_role_eligibility)
+		new_spawn.AddElement(/datum/element/dusts_on_catatonia)
 		ADD_TRAIT(new_spawn, TRAIT_SIXTHSENSE, GHOSTROLE_TRAIT)
 		ADD_TRAIT(new_spawn,TRAIT_EXEMPT_HEALTH_EVENTS,GHOSTROLE_TRAIT)
 		to_chat(new_spawn,"<span class='boldwarning'>You maybe sharing your cafe with some ninja-captured individuals, so make sure to only interact with the ghosts you hear as a ghost!</span>")

tgstation.dme

@@ -469,6 +469,7 @@
 #include "code\datums\diseases\advance\symptoms\youth.dm"
 #include "code\datums\elements\_element.dm"
 #include "code\datums\elements\cleaning.dm"
+#include "code\datums\elements\dusts_on_catatonia.dm"
 #include "code\datums\elements\earhealing.dm"
 #include "code\datums\elements\ghost_role_eligibility.dm"
 #include "code\datums\helper_datums\events.dm"