Jfc that's a lot of work!

code/modules/holiday/halloween/jacqueen.dm

@@ -95,7 +95,7 @@
 	last_poof = world.realtime
 	var/datum/reagents/R = new/datum/reagents(100)//Hey, just in case.
 	var/datum/effect_system/smoke_spread/chem/s = new()
-	R.add_reagent("secretcatchem", 10)
+	R.add_reagent(/datum/reagent/fermi/secretcatchem, 10)
 	s.set_up(R, 0, loc)
 	s.start()
 	visible_message("<b>[src]</b> disappears in a puff of smoke!")
@@ -181,7 +181,7 @@
 				visible_message("<b>[src]</b> raises an eyebrown, <span class='spooky'>\"It's 4 candies for that [gender]! Thems the rules!\"</span>")
 				return
 			visible_message("<b>[src]</b> waves their arms around, <span class='spooky'>\"Off comes your head, a pumpkin taking it's stead!\"</span>")
-			C.reagents.add_reagent("pumpkinmutationtoxin", 5)
+			C.reagents.add_reagent(/datum/reagent/mutationtoxin/pumpkinhead, 5)
 			sleep(20)
 			poof()
 			return
@@ -340,7 +340,7 @@
 			C.equip_to_slot(jaqc_latern, SLOT_HEAD, 1, 1)
 		if(4)
 			visible_message("<b>[src]</b> waves their arms around, <span class='spooky'>\"In your body there's something amiss, you'll find it's a chem made by my sis!\"</span>")
-			C.reagents.add_reagent("eigenstate", 30)
+			C.reagents.add_reagent(/datum/reagent/fermi/eigenstate, 30)
 		if(5)
 			visible_message("<b>[src]</b> waves their arms around, <span class='spooky'>\"A new familiar for me, and you'll see it's thee!\"</span>")
 			C.reagents.add_reagent("secretcatchem", 30)