When I was looking at air purifiers, I noticed the Rabbit minus a2's.
Sounds like cigrmaster is referring to some heavy duty equipment!
Installing a vent outake, like a smoke eater would probably be best. Thats like what B&m's use. Just a vent in the ceiling that moves air out. Id imagine they cost a LOT too.
A small purifier/filter like the rabbit would work with a small space. Keep in mind, this will only make the air a little cleaner and less stinky since you arent moving any air out. There are little ozone purifiers too, check out cigar aficionado who reviews them from time to time.