[71] Other interesting new e-cigarette-like devices provide a combined function with other electronic products such as a Bluetooth e-cigarette, which combines vaping with listening to music or calling friends and another device can be used both as e-cigarette and mobile phone
According to a 2021 study published in the International Journal of Environmental Research and Public Health, about 40% of people who use e-cigarettes daily reported experiencing common vaping side effects
[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
Control 28 , 146151 (2019)
Interestingly, early 20th-century packs often held 10, 12, or even 14 cigarettes the 20-count only became dominant after World War II
