Vaping products, run on batteries and heat up nicotine, flavorings, and other chemicals. They turn them into a vapor you breathe in. Many chemicals that cause cancer are in this vapor. That includes formaldehyde, heavy metals, and particles that can get stuck in the deepest parts of your lungs.
One chemical in some e-cigarette flavorings is a buttery-flavored one called diacetyl. It's been linked to a serious lung disease called bronchiolitis obliterans. It's also known as popcorn lung.
"Popcorn lung" is the nickname for bronchiolitis obliterans. That's a condition that damages your lungs' smallest airways and makes you cough and feel short of breath.
The chemical that gave this condition its nickname is diacetyl. After workers at a factory that packaged microwave popcorn were found to have bronchiolitis obliterans more often than other people, some companies stopped using diacetyl as a flavoring. But it's still used in many vape flavors.
Nicotine is as addictive as heroin and most vaping devices contain nicotine. Because it's not regulated, vaping devices may contain nicotine even when the label says otherwise. A study published in the Journal of Pediatric Nursing determined that half (51 percent) of the labels do not accurately reflect the levels of nicotine found in the products.