When someone vapes around others they expose them to 'second hand aerosol'. But what happens to that aerosol then? Does it disappear or is it like cigarette smoke and stays around, sticking to 9 signs your teen may be vaping Nebraska Medicine Omaha, NE Secondhand vape exposure: Risks and side effects Which Smoking Habit Puts You Most at Risk? Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times