There are known carcinogens in my drinking water.
You can go through all the textbook answers on what chemicals are where and what causes what.
In the real world, second-hand smoke is *not* detrimental to the vast overwhelming majority of people. It's uncomfortable, but not detrimental.
The real statistics, and I'd have to search around, there was a discussion on the radio I was listening to, is that average exposure to roommate who smokes, it will take you on average over 2,000 years to develop cancer from the second-hand smoke.
You are more likely to develop cancer from using a cellphone than you are from breathing second-hand smoke. Therefore, according to activist nutjobs like IronWing, cellphones must be banned from the workplace under OSHA!!!!!!!!!!!! Hell, the fucking monitor IronWing is using to read ATP&N is causing cancer too, therefore I think he must ban himself from the internet to prove to us he is not a hypocrite