I'd much rather spend my time in a space that vapers are exhaling into than any other space.And, BTW, Dr. Antz Laborcamp himself exhales CO2, traces of CO and various germs. According to his own theory, he should not be allowed in indoor public spaces or government buildings.
At least we are doing our part to kill germs, bacteria, fungus, and other nasties.
But that's so beyond the bounds of "common" sense that it will never enter into any "rational" discussion.