Fixes tiny fans blocking people and not blocking atmos

code/modules/mining/shelter_atoms.dm

@@ -240,14 +240,10 @@
 	desc = "A large machine releasing a constant gust of air."
 	anchored = TRUE
 	density = TRUE
+	can_atmos_pass = ATMOS_PASS_NO
 	var/buildstacktype = /obj/item/stack/material/steel
 	var/buildstackamount = 5
 
-/obj/structure/fans/CanPass(atom/movable/mover, turf/target, height=0, air_group=0)
-	if(!height)
-		return FALSE
-	return TRUE
-
 /obj/structure/fans/proc/deconstruct()
 	new buildstacktype(loc,buildstackamount)
 	qdel(src)