I hate doob tubes or "spoofs", I used to use them in my younger days and well, a room that reeks of fabric softner is just as obvious as a room that reeks of weed, plus the fabric smells sticks to eveything for days. invest in something called Ozium, its used in hospitals, hotels and other industrial buildings. I bought mine at a head shop for 15 bucks for a pretty big spray can of it, no matter how smokey the room is, one one second spray is all you need, it literally eats the smoke out of the air (it is what it was made for) and replaces the smell with a nice fresh scent that is gone in a few seconds