Vaping danger Stanford Medicine Vaping E Cigarette Health Risks: What's the Latest? Dana Farber Cancer Institute Some reports state that these new, flavored smoking devices are less harmful than tobacco cigarettes but how safe is vaping? In this third part of a four part series, China Daily examines the Lung cancer risks persist with e cigarette use after quitting tobacco smoking New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking