Adds helpers to avoid << use

code/modules/mob/dead/observer/observer.dm

@@ -351,7 +351,7 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 				source.plane = old_plane
 	to_chat(src, "<span class='ghostalert'><a href=?src=\ref[src];reenter=1>(Click to re-enter)</a></span>")
 	if(sound)
-		src << sound(sound)
+		SEND_SOUND(src, sound(sound))
 
 /mob/dead/observer/proc/dead_tele()
 	set category = "Ghost"