E Cigarettes: Is Vaping Bad for Your Teeth? Delta Dental Of Washington Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Secondhand Smoke and Electronic Cigarette Aerosols US EPA In secondhand vape, scientists smell risk American Heart Association Secondhand smoke and secondhand aerosol Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London