Marlboro

[Caveman]

I believe that part of the reason tobacco is a caricinogen (think even snuff and chewing tobacco) is that there is naturally a bacteria that grows on it which releases the carcinogen. So if this contains natural tobacco leaves it could still be a cancer risk?

Don't forget about the chemicals used to treat tobacco. A good question perhaps is the effect of those chemicals in combustion vs vaporising.

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