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. Disposable Vapes Release Toxic Metals, Lab Study Says The Anatomy and Chemistry of a Disposable Vape Covalent What's really inside vapes? We pulled them apart to find out Pupils unwittingly smoking spiked vapes University of Bath study finds Clearly flavored: the rise of clear e cigarettes