I have bough this air purifier thing from xiomi, since my allergies this year have been worse than before. The funny thing is that whenever I smoke a pipe in my den, further down the hallway, in the living room the the air purifier goes bananas. From 001 air safety, it goes to 300+. It does the same thing with scented sticks, you know the Asian ones that you light on fire. Kind of funny ... It does a great deal with ambrosia polen though, so I guess it stays even if doesn't like my pipe smoking. Besides, I know the air turns hazardous when I smoke, my wife tells me that all the time, so I guess another voice won't get through my thick skin ?