Commercial liquids for electronic cigarettes contain nicotine and various constituents/flavorants dissolved in a vehicle solution, which is often propylene glycol and vegetable glycerin (7)
You already know that strawberry is pink, red is cherry, mint is blue, that's what makes you feel like you're already smoking before you can smoke. (FG4, MX) In addition to indicating a specific flavor, the colorfulness of a pack also seemed to evoke generalized or novel flavor expectations: For the colors, more than the taste, for the colors, the presentation [of the] Crystal Violet was new to me at one point, and it strikes me as a good flavor. (FG3, MX) There are a lot of colors, it looks like a candy. (FG8, PH) Overall, participants indicated that colors increased the appeal of the cigarette pack, especially certain combinations, blended design, and vibrant colors: The way colors were blended and complemented seems very cool and ingenuous
Matthews, J.C., Navasumrit, P., Wright, M.D., Chaisatra, K., Chompoobut, C., Arbon, R., Khan, M.A.H., Ruchirawat, M
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Also, a study estimated the carcinogenic potency of secondhand smoke from IQOS to be three orders of magnitude lower than cigarettes 95 , and another study showed that IQOS does not impair indoor air quality and does not lead to acute health risks for bystanders 96
