OK,I'm gonna tell Ya'll a purty good method,so get yer printer warm! Let's go:
1) If you got use of a bathroom where a vent is below the window,YEA!
2) Have a candle with scent wax ready to light,after you have gone in,locked the door,filled your one-hitter,and quietly open the window.It,s a good idea to"tweak"the thermostat so the AC will start right fore you go in the can.
3)Toke the few hits,right at the window,blowing out.Therising cool air causes the upper warmer air from the open window to suck out smoke.When you're done,put your gear away(I keep mine in a baby sock,makes it easy,quiet).
4) FLUSH ! While the water and noise is goin,close window,blow out candle,have breath spray ready,I even pour a bit of Pinesol in the bowl and use the brush,then wash them hands,and walk on out.
This works well for me,but then again,I got the vent under the window.
Jack Saturn