Yes, if you cant open the window, take a toliet paper tube and pack it with dryer sheets (or at least pack it tight as hell with TP). Exhale through there... But sure to snuff the bowl out before your done inhaling though. Used to do that when I couldn't open my window (window a/c for the summer) works like a charm... Snuffin the bowl is required though, and an air freshener is a really good idea...