The risks of first hand and second hand vaping Eoleaf Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Secondhand Smoke vs Vape: What the Science Says Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Is Secondhand Vape Smoke Bad for You? Baton Rouge General Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London