The e-cigarette aerosol that users breathe from the device and exhale can contain harmful and potentially harmful substances, including:
1.Nicotine
2.Ultrafine particles that can be inhaled deep into the lungs
3.Flavoring such as diacetyl, a chemical linked to a serious lung disease
4.Volatile organic compounds
5.Cancer-causing chemicals
6.Heavy metals such as nickel, tin, and lead