Another chemical found in JUUL pods is acrolein. This dangerous chemical is a product of burning anything from wood, to tobacco, or even cooking oils. While mild exposure can cause general irritation, heavy exposure to acrolein, which happens when vaping, can severely injure a person's lungs.

Does vaping produce acrolein?

A number of studies have shown that in addition to nicotine and flavorings, e-cigarette vapors may also contain carbonyl compounds, including potentially harmful species such as formaldehyde, acetaldehyde, and acrolein [5,6,7,8,9] as well as diacetyl [10].

What chemicals are in JUUL?

JUUL contains nicotine, although many people are unaware of this fact. Some JUUL pods contain almost twice as much nicotine as other types of e-cigs. Besides nicotine, JUUL pods also include other ingredients, like benzoic acid, propylene glycol, glycerine, and substances that create different flavors.