People are just so stupid and blind as a whole, there is a lot more out there to harm you than nicotene and second hand smoke.
True that, like the air as we sit in traffic through the downtown slot on the 101? Or the 405 near LAX, where you get the double-whammy of car and jet plane exhaust?
It's amazing that people in this city put up with constant bumper-to-bumper traffic and the associated car and diesel exhaust, yet worry about my second-hand vapor (which smells like a berry smoothie at the moment).