Tobacco, after all, is a carcinogenic substance even when chewed, even if it does not undergo any heating or processing
With studies like those published in Addiction and the Journal of Liquid Chromatography & Related Technologies identifying impurities in certain e-liquid brands, the possibility that the FDA is right now making plans to issue standardized regulations to which vape manufacturers will be expected to follow is very high, if

Kennedy, Democrat of New York, who has proposed stringent health controls on the tobacco industry SMOKING and HEALTH ( a potpourri of industry thought) Tobacco Reporter asked manufacturers, growing representatives and distributors to suggest ways the industry might combat anti-tobacco propaganda on smoking and health.' (4 pages) Analysis Tobacco Reporter December 1967 Flue-cured tobacco growers had only just recoiled from having tobacco prices plummet coinciding pointedly with publicity generated by Senator Robert Kennedys cigarette restriction bills and having their market turned upside down by increased demand for low nicotine tobacco, presumably generated by government activities, when Surgeon General William Stewart visited tobacco country
[16] Part of Marlboro's rise in market share was its ability to produce "milder, more aromatic, sweeter, and less harsh" cigarettes by adding ammonia to the tobacco
The paint never chipped, and the smell never came through, even after 7 years in a tiny house