You seem to imply that everyone who has ever been around smoke for an extended period of time will get all sorts of unpleasant conditions. But if that's the case: Why isn't an across the board truth?
I can give you chapter and verse on people I've known personally who smoked all their lives who have not even a trace of cancer or breathing problems...one guy died 2 yrs ago at the age of 90...smoked for 77 years..died of old age. Another woman I know just celebrated her 85th birthday, lived through the holocaust, survived 3 husbands and 2 kids, and has been smoking for 70 years. And her only malady, at the moment, is a bum hip.
And I'm still not clear on why if smoking causes cancer, some doctors are convinced that smoking pot is a cure. Seems ironic, no?
Why play russian roulette with a childs life ? Would you think its appropriate for nurses in a hospital to smoke around new borns ? If not, whats the difference between that and a 9 month in a car seat ?