first of all if you are worried about the smell, j's and blunts arenbt the answer. if you really feel you need to puff inside, then hear is something to keep the smell away...
get some dryer sheets, get a empty water bottle...cut the bottom of the water bottle off....stuff with a bunch of dryer sheets, take off the cap....and now you have a chamber stuffed with dryer sheets to exhale your smoke through, and leaves the room smelling fresh. dont understuff the bottle with dryer sheets. use like 20 of them. it will work