Vape Waste 2 281: Vaping Information Sheet Disposable e cigarettes, popular among teens and young adults, are not as harmless as they may seem. Recent studies have revealed that these devices release toxic metals like lead, nickel, and antimony into Vaping, Panic, and Prohibition: Why the UC Davis Study Needs Context Cato at Liberty Blog China e cigarette titan behind 'Elf Bar' floods the US with illegal vapes Reuters 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