is pure tobacco carcinogenic Smoking hazardous to our health. Tobacco has at least 70 known cancer-causing chemicals that can cause heart diseases, lung diseases, & other serious health problems. Also, it is known that Tobacco and Cancer | Cancer

Secondhand smoke can damage the hearts and blood vessels, and can increase the risk of heart attack and death, in people who dont smoke in the same way that active smoking harms people who do smoke

Vaping has increased exponentially in recent years, causing teen cigarette use to drop

Countering Tobacco Industry Opposition to Local Tobacco Control

Therefore, an ideal pretreatment method should have some common features, such as the ability to process large amounts of feedstocks, efficient separation of all fractions of biomass, substantial enhancement of enzymatic hydrolysis, low energy demands, low capital investment, ambient process conditions, and insignificant generation of fermentation inhibitors