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 Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Secondhand Vape Exposure: Effects, Who's at Risk, and More Should I Be Concerned About Secondhand Vaping? Is Secondhand Vaping Harmful To Your Health? 5 Vaping Facts You Need to Know Johns Hopkins Medicine