Is Vaping Safe? Here are the Facts. Brown University Health Another Gross Reason to Put Down the E Cigarettes American Lung Association Smoke and mirrors: is vaping useful for smokers who cannot quit? bpacnz Blog What you need to know about the health risks of vaping Main Line Health Virtual Vape Smoke Simulator App on Amazon Appstore Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN