This is what i do. Get a paper towel tube and a paper towel, almost but not quite soak the paper towel with lysol(anything like lysol will work), ball the paper towel up and put it in the tube.Now take a hit and exhale through the tube, pointing the tube into a closet helps.I normally use a small pipe( easy to hide) and after you take your hit ,always cover the bowl with your thumb to keep extra smoke from comeing out. I always keep a tube of toothpaste and Shaveing Gel , swish some toothpase in your mouth and rub some of the gel on your hands and cheeks when your done(keeps from being smelt but i wouldent get in anyones face lol). Ive tryed smokeing out my window and stuff but it never worked out good for me in the end. peace