Testing has revealed what we already knew illegal vapes are filled with dangerous levels of addictive nicotine and laced with chemicals including formaldehyde and antifreeze components. E cigarette aerosol isn't just water vaporit contains toxic chemicals like formaldehyde and acrolein (yes, a weed killer!). Vaping can lead to lung disease, Popcorn Lung, and even a collapsed lung. Plus, secondhand Vaping HC DrugFree Vaping Study Finds Formaldehyde In The Juice