No matter on Quora or Google search, people who are interested in vaping have been asking for the similar issues, ‘is second-hand vapor harmful’, ‘how much vaping is too much vaping’,‘can vape cause popcorn lung?’ and ‘is vaping without nicotine bad?’. This article is for the smokers and non-smokers who are curious about vaping or plan to have a try. 5 Questions on Vaping and Health | Aspire blog Is second-hand vapor harmful? What's your opinion about this question? Please feel free to leave your comment below.