In the fifties they used nicotine as a pesticide. So they new.
And kept adding other poisons to make cigarettes appealing.
Specially to the paper. I'm alive because what I smoked was premium cigars.

The FDA, the most corrupt of all the "letters", is trying to pass regulation on vapor. Not because is good or bad. But because the billions and billions dollars lost in revenue. Besides, tobacco is a proven killer. Those who smoke have absolutely nothing to lose. But their life. Which is lost already.
And death ain't pretty. Gasping for air.