when i smoke..i enjoy blowing and seeing the smoke..so iw ouldnt want to blow it in the tube...another way ...is def. put the towelat thebottome of the door..and if it is nice out..and make sure the wind isnt blowing at the window..just get a chair..and smoke next to the window...and blow it torwards it and amke sure like you can se most of it going out..and if you do itin yoru bathroom turn on the fan..butin your room i usually just have a candle going and the window open..and i will leave the window open and the candle goin wheni am done and if it is a bad smell just spray axe..blow out the candle so the smoke from the wick goes througth out the room..then light it again and get teh smell in the rom again..it works for me