if your smokin inside u can use a doob tube, take a cardboard tube from the middle of roll of paper towels and stuff 5-7 dryer sheets in there and blow all the smoke into one end. it comes out smelling like a cloud of fabric softener. if your really paronoid you can take a big plasitc bag and rubber band it over one end, with no air in it. have a bag of smoke at the end of your session.