Disposable vapes are more toxic than cigarettes, contain lead: Study Deconstructing contemporary disposable vapes: A material and elemental analysis ScienceDirect China e cigarette titan behind 'Elf Bar' floods the US with illegal vapes Reuters Vaping has been marketed as a healthier alternative to smoking. But, do you actually know what is in your vape? Turns out vapes contain heavy metals, cancer causing agents, and so many more 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 Vaping exposes users to toxic metals like lead and uranium, study says