smoke cigarettes and 3.7% smoke cigars
[137] Flavor components include diacetyl, acetoin, and 2,3-pentanedione (buttery flavor), eucalyptol, camphor and cyclohexanone (minty flavor), cinnamaldehyde (cinnamon flavor), benzaldehyde (cherry or almond flavor), cresol (leathery or medicinal flavor), butyraldehyde (chocolate flavor), and isoamyl acetate (banana flavor), methyl salicylate, pulegone, ethyl salicylate, eugenol, diphenyl ether, and coumarin
Or it could be an odor that isnt actually present (known as phantosmia)
This causes the brain to release dopamine and other neurotransmitters, such as endorphins, which produce the euphoric feelings that make smoking so addictive
The best time to detect potential problems, including early lung cancer, is before symptoms become severe