Ruyan studied "second hand
vape", along with virtually everything else about the vapour composition. Here:
http://www.healthnz.co.nz/RuyanCartridgeReport30-Oct-08.pdf
Summary - 98% of nicotine is absorbed by the user, and theres no side-stream from the tip, theres no appreciable nic in second hand vapour (or anything else worth worrying about)
Your ex-smoker fella sounds very illogical and unreasonable. Type of guy who still beleives the world is flat unreasonable. Nicotine does have some negative health effects (heart rate, blood pressure etc), but its nothing _at all_ like tobacco smoking far more akin to caffiene.
If he personally wants an informed opinion, he should look at all the research by ruyan, as well as a point by point comparison of just nicotine health effects versus all of smokings health effects.
His position is completely and utterly untenable, but you shouldn't have to do his thinking for him. He's probably just jelly, lol!
FYI, ruyan are doing a study on the effectiveness for quitting this year (triple blind, and finally well have those numbers, yay!).
I think by the end of this year or next, ruyan will probably have fully completed its required study on safety and efficacy and should be able to register here in new zealand as a medicine (research so far has been all 100% good, and theres been a fair bit).
Maybe that can use the same research to apply in canada, and the EU, if they go that way too, as medicines, seeing as the process should be roughly, or even, exactly, the same research wise.
That will shut some people up, and fix some silly situations. Thank god for science
Its also a pretty good long-play plan on that part of Ruyan. Even if
vaping is accepted in a lot of places, theres bound be a few that take a more "its medicine" route, or have that route available for awhile. In those places, it will be ruyan's game.
It should help silence all the lying and speculating on the part of the highly biased anti-smoking lobby too (and people like your ex-smoking buddy)