Impacts of vaping and marijuana use on airway health as determined by exhaled breath condensate (EBC) Respiratory Research Springer Nature Link They may look harmless and smell sweet but disposable vapes can release toxic metals at levels even worse than cigarettes. A UC Davis study found lead, nickel, and antimony inside A new study from UC Davis found that disposable vapes have much higher concentrations of heavy metals like lead and nickel than traditional cigarettes. CBS Evening News Facebook UC Davis study reveals higher toxicity in disposable e cigarettes YouTube New study finds disposable vaping devices more toxic than traditional cigarettes What's inside a vape?