Can vaping cause cancer? The evidence suggests it might. The Washington Post Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Is Vaping Worse Than Smoking Cigarettes? Get the Facts Not Just Water Vapor Healthy UC Davis Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN The Alarming Surge of Fentanyl Laced Vapes: A Lethal PharmChek