"... which according to lab results consists of 99% of water..."
So they aren't using PG.
He was talking about exhaled vapor, not being dangerous like second-hand smoke (which, he says, has been proven to cause lung cancer! Where's the proof of that?)
I'm also disturbed by his repetition of the "4,000 carcinogens" in
tobacco smoke. Over and over, he says this. I've read the studies and there are about 4,000 known chemicals in
tobacco smoke, of which about 200 are carcinogenic. Where are studies showing 4,000 carcinogens? Certainly not all chemicals are carcinogenic or mutagenic.
And does he have funny eyes or is he reading?