diff --git a/code/game/objects/items/weapons/grenades/atmosgrenade.dm b/code/game/objects/items/weapons/grenades/atmosgrenade.dm
index 68933f6c0e41d..bb8d3186763b5 100644
--- a/code/game/objects/items/weapons/grenades/atmosgrenade.dm
+++ b/code/game/objects/items/weapons/grenades/atmosgrenade.dm
@@ -12,13 +12,6 @@
 	var/turf/simulated/target_turf = get_turf(src)
 	if(istype(target_turf))
 		target_turf.atmos_spawn_air(spawn_contents, spawn_amount)
-
-/obj/item/grenade/gas/proc/release_air(turf/simulated/target_turf)
-	// Any proc that wants MILLA to be synchronous should not sleep.
-	SHOULD_NOT_SLEEP(TRUE)
-
-	target_turf.atmos_spawn_air(spawn_contents, spawn_amount)
-
 	qdel(src)
 
 /obj/item/grenade/gas/plasma