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 Second hand vape smoke linked to more asthma symptoms in kids Secondhand smoke and secondhand aerosol Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Tobacco Smoke, Vaping, and Asthma AAFA.org Characteristics of second hand exposure to aerosols from e cigarettes: A literature review since 2010 ScienceDirect