will chewing tobacco affect a blood test Revealing the Truth About Chewing Tobacco and Fatty Liver:

10.1016/j.ijat.2006.09.010

Carcinogenic tobacco-specific nitrosamines were found in the emissions of heated tobacco products 96 at levels 50 to 100 times higher than those in e-cigarette emissions but approximately 10 times lower than conventional cigarette emissions

And the difference is probably achieved by the lack of technological additives in the tobacco

[45] Leukoplakia located on the floor of the mouth, the posterior and lateral tongue, and the retromolar areas (the region behind the wisdom teeth) have higher risk, whereas white patches in areas such as the top surface of the tongue and the hard palate do not have significant risk

No ban or dysfunctional ban: Complete absence of smoke-free legislation, or absence of smoke-free legislation covering either health-care or educational facilities

Puffing through the city Smoke signals from afar Cigarettes and sightseeing Blazing trails with jokes A little drag, a lot of fun Inhale adventure, exhale stress Smoky landmarks, punny remarks Clouds over London, laughs under the sun Puff and wander Cigars in Cuba, puns in your feed Smoky streets, witty meets From New York to your feed Ash and travel tales Laughter: your portable smoke break Jet-lagged but pun-ready Silly & Sassy Smoking Wordplay For sass-lovers, this is your pun playground