Yeah, I'd go with the advice on here.

What I used to do when I lived at my parent's was open the window and have a desk fan on the window sill facing the window, put a towel under the door and just blow the smoke into the back of the fan; it takes the smoke right out the window.

But the best thing to do is just go out somewhere to smoke, if you're worried about tell tale red eyes then get some of those eye drops that turn them white straight away.