Scientists Warn Against Breathing in Secondhand Vape 'Smoke' Newsweek Secondhand smoke from vaping could be harmful to children: study ABC13 Houston 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. Secondhand vape plumes could form lung damaging radicals American Chemical Society Secondhand smoke and secondhand aerosol