carcinogen present in cigarette smoke is Smoking tobacco 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 Smokeless tobacco and cigarette smoking:

Vijayaraghavan also emphasizes the need for cessation strategies to be tailored to the patient

Fumigation ( dhupa ) and fire offerings ( homa ) are prescribed in the Ayurveda for medical purposes, and have been practiced for at least 3,000 years while smoking, dhumrapana (literally "drinking smoke"), has been practiced for at least 2,000 years

American journal of epidemiology, 179(7), 807-823

This group looked carefully for a potential infection of OSN

"We can age gracefully in part by choosing to avoid toxins such as alcohol and smoking, both of which increase the production of toxic free radicals, also known as oxidative stress," he told Fox News Digital