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 Secondhand Smoke and Electronic Cigarette Aerosols US EPA Is Second Hand Vape Smoke Harmful Reddit A Cool Guide Side Effects of E cigarettes Can you get second hand smoke from a vape Thirdhand Smoke Resource Center Protecting Californians Study shows second hand vaping exposure very low compared to second hand smoking