Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy 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 In secondhand vape, scientists smell risk American Heart Association Dangers of vaping and second hand vaping are greatly underestimated Earth.com