Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN E Cig Vapor Or Secondhand Smoke: Which Is Worse For You? Second Hand Vaping Vape Smoke Free Is Second Hand Vape Smoke Bad For You? Learn How to Avoid its Side Effects The Dangers of Secondhand & Thirdhand Smoke Exposure Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London