If you have access, use a bong. Only pack enough bud in the bowl so that you can clear it in one hit. Then use a fan/tube and blow the smoke out of the window. Vaporizers are good too. At my school last year we were all about "the flow" of the room. Tape a tissues to the window screen and another at the bottom of the door. Then you could see which way the breeze was going, into the hallway or out the window. We did that a bunch of times, along with a little Febreeze and it was all good.