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Actually I meant the non-vapers that inhale the gases, just like passive smokers that breathe the smoke of other people's cigarettes. I believe there won't be any considerable effects on their health.

Yeah that's what I was referring to :)

Exposure of people in the area of people vaping, but they themselves are not.

Second hand vape.

If there was no effect to the people actively vaping then there would be none to bystanders as well, I would suspect at least.