All we have is one of those febreeze air scrubbers with a charcoal filter you can pick up at lowes for 12.99. It works pretty good until we start touching the girls(haha sounds dirty) but then the room stinks. It gets the smell out after a little bit though. It used to smell outside the house, but now it doesn't. As soon as we get a proper exhaust for that cool tube we're gonna put a real carbon filter on it. Already have all the stuff to make one.