Is Second Hand Vape Smoke Bad For You? Learn How to Avoid its Side Effects While early research suggests it may not be as dangerous as secondhand smoking, it's still not harmless, experts say. https: www.wate.com news does vaping cause secondhand smoke doctors explain the side effects ?utm_medium=social&utm_source Second Hand Vaping: Minimal Impact Compared to Smoking Secondhand Smoke and Electronic Cigarette Aerosols US EPA Vaping Produces Far Less Second Hand Nicotine Than Smoking Respiratory Therapy