I always remove the bands.
I only smoke outside (sometimes in the car, but only top down...)
When I've been smoking, I tend to stay away from others for a while.
Cigarettes drive me nuts due to the propensity of the cigarette smoker for throwing the dang butts everywhere. Had one bounce off my windshield the other day.
I can smell a cigarette smoker right away. Even though I reek of cigar often enough, I don't like the smell of cigarettes. After 8 months, i'm still trying to rid my car of the smell of cigarette smoke on a hot day. The woman that owned it before me must have had one or two a day in the car. I've gotten most of it out, but it's still there on a hot day after the car has been closed up for a bit.