What Is in E-cigarette Aerosol?

What Is in E-cigarette Aerosol?

E-cigarette aerosol is NOT harmless “water vapor.”

The e-cigarette aerosol that users breathe from the device and exhale can contain harmful and potentially harmful substances, including:


Ultrafine particles that can be inhaled deep into the lungs

Flavoring such as diacetyl, a chemical linked to a serious lung disease

Volatile organic compounds

Cancer-causing chemicals

Heavy metals such as nickel, tin, and lead

It is difficult for consumers to know what e-cigarette products contain. For example, some e-cigarettes marketed as containing zero percent nicotine have been found to contain nicotine.