I've said here before, the only ones that really benefit from all the anti-smoking spin are the pharmacutical corporations. They make billions worldwide on the lies spun and their drugs combined with the criminal practices of the nuvo medical fraternity send millions to a premeture grave each year. If "they" were serious about healthy air they would insist catalitic converters were changed out every few years. But they don't, because that would hurt the auto industry and probably empty half the hospital beds in the country.
Here, have a look at what you won't see on channel 9
http://www.youtube.com/watch?v=FPI7zdGdqo4