New study finds disposable vaping devices more toxic than traditional cigarettes The dangers of e cigarettes: Why UC Davis says they are more toxic than traditional cigarettes A new study from the University of California, Davis, reveals that popular disposable vapes from brands like ELF Bar, Esco Bar, and Flum Pebble emit more lead than smoking 20 packs of Can Vaping Cause Lung Cancer? Here's What We Know The Lung Docs