Studies have long shown more of a corelation between the increase in diesel use than in any kind of smoking. Also there are some very direct genetic links that refute the second hand smoke theories.
Now for all you fat non-smokers, stay the fuck away from me.
http://www.webmd.com/diet/news/20070...gger-fat-cells
Overweight people cause a massive drain on health resources vs. smokers. So don't be infecting me with your virus, and stay out of the bars, workplaces, and other public places.