Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Chemicals Does cannabis create thirdhand smoke? Thirdhand Smoke Resource Center Secondhand vaping: The latest vaping health risk CNET 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 Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy