Don't forget to put a towel under the door, sometimes air can blow in from the window and out of the room under the door carrying the smell with it. Also I have never used an air sanatizer except once, what I normally use is either lysol but ussually I use my brother's aerosol deoderant. My dube tube is rather large too, I kept loosing the ones made from toilet paper rolls so I took a two liter bottle put a couple of holes in the solid end and stuffed it with the dryer sheets, works alot better than the little ones. Also, if you want to burn insence when your smoking to help cover up the smell don't just burn them when your smoking in case someone starts to catch onto what you doing, burn it even if your out of weed at random times, because when it comes to smoking inside most people set themselves onto a schedule without relizing it, and bby doing this it confuses everyone else to when your smoking