Health: Up in Smoke

A Montana ordinance has a surprising effect--and triggers a CDC warning

I don't smoke cigarettes and have always been cautious about breathing secondhand smoke, but I never worried too much if I inhaled a little of the stuff in a bar, a restaurant or a building entranceway in cities like New York where indoor-smoking bans have driven smokers onto the sidewalks. So I was surprised when I heard that the Centers for Disease Control and Prevention (CDC) had issued a warning advising anyone at risk of heart disease entirely to avoid indoor public spaces where smoking is allowed. According to the CDC, exposure to secondhand smoke for as little as 30 minutes...

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