About E Cigarettes (Vapes) Smoking and Tobacco Use CDC Vaping exposes users to toxic metals like lead and uranium, study says 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 Macroscopic Metals The Real Cost Why Do Disposable Vapes Taste Better? Macroscopic Metals The Real Cost