how many chemicals does a cigarette have What Are The Main Ingredients In Cigarettes? Cigarette smoke contains thousands of

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: Nicotine Ultrafine particles that can be inhaled deep into the lungs Flavorings 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 The aerosol that users inhale and exhale from e-cigarettes can expose both themselves and bystanders to harmful substances

must start placing on cigarette packs sold in the U.S

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[65] It is possible that these products could appeal to non-smokers, especially since they are available in various flavors