UC Davis study: Disposable vapes may be more toxic than cigarettes Disposable E Cigarettes More Toxic Than Traditional Cigarettes UC Davis Teenage Vaping Declines This Year, Survey Says The New York Times Youth often mistakenly believe vaping concentrates are harmless, but the concentration of nicotine and chemicals is shocking. Did you know? One disposable vape (up to 5,000 puffs) can equal the nicotine content