Secondhand Vape Exposure: Effects, Who's at Risk, and More Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Effects Of Second Hand Vape Smoke Thirdhand Smoke Resource Center Secondhand Exposure to Simulated Cannabis Vaping Aerosols Environmental Science & Technology Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN