2nd Hand Vape Smoke Effects The Issues of Testing for Secondhand Smoke Secondhand Smoke and Secondhand Vaping: Both Bad for Kids University Hospitals Secondhand exposure from vaping marijuana: Concentrations, emissions, and exposures determined using both research grade and low cost monitors ScienceDirect Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA Effects Of Second Hand Vape Smoke 2nd Hand Vape Smoke Side Effects Project Filter 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