Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Scientists Warn Against Breathing in Secondhand Vape 'Smoke' Newsweek E Cig Vapor Or Secondhand Smoke: Which Is Worse For You? Parents using e cigs expose kids to dangerous secondhand vapor Futurity Is it safe to vape around babies & children? How it affects them Allen Carr's Easyway Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN