Turns out the disposable nicotine delivery systems are, as suspected, worse than the real thing, according to a new study from researchers at UC Davis. UC Davis study: Disposable vapes may be more toxic than cigarettes Teenage Vaping Declines This Year, Survey Says The New York Times Disposable vapes ban could lead young adults to switch to cigarettes, study finds Vape ban Australia: Fewer school age children vaping, study says