Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London 5 Vaping Facts You Need to Know Johns Hopkins Medicine Differing Opinions About Second Hand Vape Exposure Vaping Post 2nd Hand Vape Smoke Effects Second hand e cigarette vapour increases risk of poor respiratory health, study finds Early research says secondhand smoke from vaping may not be as bad as cigarettes, but it's still not harmless. https: fox59.com news national world does vaping cause secondhand smoke doctors explain the side effects