I don't smoke. Quit 15 months ago from 40/day to nothing by willpower. Since stopping I have become really sensitive to the smell of smoke, probably from the guilt of knowing that I inflicted it on my nearest and dearest for 25 years.
So E-cigs are banned, what about inhalators?
People don't want the risk of breathing in minute traces of nicotine fumes (odourless and tasteless) whilst sitting on an aircraft? You don't care about all of the bacteria and viruses being concentrated in the recycled cabin air? Or the fumes from burned JET A1 coming through the vents?
E-cigs are banned probably because of the risk of upsetting other smokers and causing a riot, or the risk of fire, Either way they are banned for a sensible reason.
If people are worried about the quality of their cabin air then I would suggest people with a diet rich in brussel sprouts and pickled eggs would pose a greater risk and ought to be banned from all long haul flights.
And I am a born-again anti-smoking Nazi at this moment in time!