sounds like the ticket
what i'd do is put a towel under the door, close ceiling vent up, lay on my bed infront of window, hit bowl there, between hits cover up bowl, hold hits, blow them out, and while thats happening maybe have a fan on. and after i usualy to make sure dust the room with a lil goldbond powder(smells nice)
i had a whole system for smoking. smoking in the shower, in my room, outside, garage, whatever, i had a proven way to do it ..