[Bill86]

Youll be fine in a whole basement. You're right Dom I should have been more clear. What I meant was in a small room say 12x12 or under the smell can be quite potent. My experiences with these units only bothered me in small rooms specifically hotel rooms. Also it takes quite a while for the ozone smell to be in all parts of the room. A large room might take longer than you're smoking time in the room so you might not be bothered by it.