Well, I smoke in the basement in the winter. And for some reason this year the smell is just lingering worse than ever. Not that I have been smoking more........ No way that could be it! I picked up the Kenmore to try out and it does nothing, doesn't help it is only for a 150 sqft room. The incense that I burn does more. So, I'm now looking for a beefier unit, that will work.