[Sancho]

My thought process is essentially finding a place with a unfinished or marginally finished basement and building a room in a room(or maybe just two walls into a corner) and venting to the outside. Essentially something that is throw away when its time to move out, with a good enough system to exhaust and recycle the air. It may be too excessive given trying to do it on the cheap.

FWIW, my landlord repaints and replaces all carpetting upon move-out mostly I would imagine due to animal fur etc getting drawn into the carpet.