Scientists Warn Against Breathing in Secondhand Vape 'Smoke' Newsweek Is It Dangerous To Breathe In Secondhand Vaping Smoke? Passive Vaping Explained 2.11.1. Smoking, Vaping and Tobacco Fundamentals of Health and Physical Activity Secondhand vape smoke may damage lung tissue AirQualityNews Vaping Produces Far Less Second Hand Nicotine Than Smoking Respiratory Therapy Secondhand Smoke and Electronic Cigarette Aerosols US EPA