I have a window in my closet, which helps out a lot since no-one goes in there but me. Anyways I open that window, then I have one of those paper towel rolls stuffed with dryer sheets on the floor beside the window. After every hit i use my lighter to cover the top of my bowl, then i exhale into the paper towel roll. It works fine, and my closet door doesnt even close all the way. A towel underneath it works fine. I have never gotten caught this way.