Protecting Youth From the Harms of Vaping Smoking and Tobacco Use CDC Secondhand smoke and secondhand aerosol Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Vaping Produces Far Less Second Hand Nicotine Than Smoking Respiratory Therapy While vaping is not risk free, it is less harmful than tobacco Our World in Data Juul study shows secondhand vaping emissions are less toxic than cigarette smoke