Is Secondhand Vaping Harmful To Your Health? Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London How can I protect my child from thirdhand smoke in homes? Thirdhand Smoke Resource Center Secondhand vaping: The latest vaping health risk CNET Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN