Just thought of this

Dont dryers have a vent leading outside? If they do couldnt you just blow your hits into it. It sounds pretty badass. Anyone know?:D

...or you could just open a fucking window.

Use your furnace. My buddy and I used to do that when we couldn't smoke inside. At the back of the furnace, there is an air suction vent that goes up and out the vents at the top of your house. When you're smoking, blow all the smoke in there and it will suck it up and spit it outside.

Or yeah, open a window or go outside.

Haha actually that was something I tried before, doesn't work very well because the they turn off when you open the door and blow smoke into them. Much of the smoke escapes into the air and the room you are in will smell like pot.
I also have a vent in my bathroom, it isn't exactly air tight so the smell seeps into the back room anyways.
What I have found to work extremely well is my furnace, diesel burning, has a metal pipe with a flap which allows air to circulate up the chimney. The flap can be secured open by placing a screw driver on it. As long as I keep my bowl close to it and blow all my hits directly into the pipe it is all sucked up the chimney.

good idea. i just vape lol. no smell.

I really dont know what to tell ya.. at my house I just light a insence and toke the bong

Smoking out a window does work decently as well, just be sure to open both the top and bottom and blow your hits directly out the top. This seems to work better when the outdoors environment is cooler than indoors.