Although, I really think there needs to be a campaign funded by the revenues generated from legal use to make it crystal clear that smoking raw, unfiltered MJ is harmful.
Thanks to the campaign to push legalized pot, most people think that it is safe to use.
Will it make a difference? Probably not. Not any more or less than all of the cigs warnings. Although, fewer and fewer people people seem to be smoking tobacco these days. So maybe it is effective.
Down from 20.9% of the population in 2005 to 18.1% in 2012. I think part of the perception that there are fewer people smoking tobacco might be the incredible regulatory feeding frenzy about where a smoker can smoke.
I'm a former smoker who recalls the push for 'non-smoking areas' in restaurants who could not smoke in any restaurant or bar if I wanted to today without facing hefty fines.
It is a great case study for 'give them an inch, they'll take a mile' regulation, much like the EPA.