Here's the crux of the article, if you take smoke residue and bombard it with nitrous acid, then it will release some remnant of the smoke in an airborne form.
This should be obvious to anyone right? It's basically pointing out that the residue of marijuana can get you high if you smoke it. Isn't this obvious?
That's what these low-lives did, they found something obvious and then proved it and then used proof-of-the-blaringly-obvious to make another point altogether, that third-hand smoke exists and is dangerous.
Really, and maybe I'm just angry here, but this only makes me think that we need to start pulling as much money out of our public universities and make these dirtbags get real jobs. I'm personally sick and tired of these people sucking up money that's intended for students and real learning and dedicating it to their zealotry.