Re: Why should they ban them?
"I don't see any reason to ban them outright, but "No Smoking" zones should apply to fake cigarettes just as they do to real ones."
Why? There's no smoke. Should boiling kettles be banned too?
Most of the people I know use the cigarette-like ones, not the big bong pipe ones and the vapour which comes out is far less than the examples usually used on news broadcasts. The vapour is glycerin. Almost all of the nicotine is absorbed on inhaling. Any left in the exhale is negligible. There's no chance of "secondary" anything.