The health risks of secondhand smoke are widely understood. But what about secondhand vaping? 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 The Generation That Will Always Be Too Young to Smoke The New Yorker 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 POV: You thought it was just water vapor. Secondhand vape aerosol actually contains: Nicotine (yep, it lingers) Formaldehyde (carcinogen) Heavy metals (nickel, lead, tin) Ultra fine particles