Wow, you like to leave out some other stuff...
"Researchers believe that second hand smoke plays a prominent role in lung cancer development in non-smokers. Limiting first hand and second hand exposure is essential for both men and women to reducing the risk factor for lung cancer. "
"Cancer in never-smoking women occurs in one in 5 cases and is increasing." Could it be from all the second hand smoke over the years? Prove that wrong. I know a lot of people who only smoked socially at the bars, but they were at the bars 4-5 days a week. In their minds, they weren't smokers. Add up their smoking, plus all the other smokers in the bar, that equals a lot of toxins. They didn't smoke much, but they were exposed to the carcinogens non the less. I believe that if my genetics are capable of giving me cancer through second hand smoke, I don't want someone's addiction to be the catalyst of me going through chemo, pain, and possibly premature death.
People in Vietnam didn't bathe in napalm, but they still got cancer from it.