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 Should I Be Concerned About Secondhand Vaping? Secondhand exposure from vaping marijuana: Concentrations, emissions, and exposures determined using both research grade and low cost monitors ScienceDirect Symptoms Of Second Hand Vape Smoke Can Second Hand Vape Smoke Affect Pregnancy Second hand smoke The health risks of secondhand smoke are widely understood. But what about secondhand vaping? Exposure to secondhand vaping fumes among teens raises concerns UPI.com