"Why do you think indoor cigarette smoking is the exception?"
Dosage is the key.
You're lecturing me on dosage? Your point was apparently that indoor polutants aren't a health issue, and I proved you wrong without having to think too hard. The evidence that tobacco -- and of course passive inhalation of tobacco -- causes cancer, heart disease and other ailments is so overwhelming at this point, in 2006, your only way to avoid admitted it is to engage in silly ad hominem rhetoric.