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 How secondhand smoke, thirdhand smoke & vaping affects kids Thirdhand Smoke Resource Center Protecting Californians In secondhand vape, scientists smell risk American Heart Association Secondhand exposure from vaping marijuana: Concentrations, emissions, and exposures determined using both research grade and low cost monitors ScienceDirect