‘Passive vaping’ is going to wipe out the human race, according to the latest study; just like passive smoking was going to. Believe the survey's conclusion or not, the notion does offer opportunities for profit. Fire up a spivvy lawyer and drag someone who dares to posture with a vape-gadget next to you to court for compromising your good health. And hope you get a dotty old judge who buys your claim for damages.
It could work.