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 Is Secondhand Vaping Something to be Concerned About? Millions of people are exposed to secondhand smoke every day. People living in multi unit housing are some of the most exposed. The only way to fully protect people from secondhand smoke at How secondhand smoke, thirdhand smoke & vaping affects kids Secondhand Vape Exposure: Effects, Who's at Risk, and More Hidden Dangers of Secondhand Vaping Emory Health Digest