Scientists Warn Against Breathing in Secondhand Vape 'Smoke' Newsweek Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Secondhand Smoke Vermont Department of Health Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Secondhand vaping may pose risk to your kids: New study Sleeping baby safety tip: Keep baby's environment smoke and vape free. Secondhand smoke in areas where a baby sleeps or spends time, like home or the car, increases the risk of health problems.