Carcinogens.
All evidence apparently says this is not the case.
Cigarette smoke contains tar, which can cause irritation to the nasal passage and the lungs, and could potentially harm them.
Tar is a sticky substance in tobacco smoke that can damage the lungs. Carbon monoxide is a toxic gas in tobacco smoke that reduces the blood's ability to carry oxygen. Nicotine is a highly addictive stimulant found in tobacco that increases heart rate and raises blood pressure.
Inhaling smoke from any substance causes damage to your lungs. weed is better for u because it is a plant not a hole bunch of junk like tobacco i have never done weed in my life but this is what ppl told me and if any one of u smoke weed and get caught say dont panic its organic
Apex :) Nicotine is the addictive substance that is found on tobacco.
One dark substance that can make cilia clump is tobacco smoke. The chemicals in tobacco smoke can negatively affect the cilia in the respiratory tract, causing them to clump together and impair their ability to effectively clear mucus and debris from the lungs.
The smoke form burning tobacco can condense to form a black tar.
No tobacco is safe to smoke. Tobacco causes a variety of diseases, including cancer of the lips, mouth, tongue, esophagus and lungs.
side stream smoke-smoke coming from the burning tip of a cigarette Mainstream smoke-smoke that comes from the smokers lungs CHEMICALS
Wood smoke is much worse than tobacco second hand smoke. Wood smoke contains more than twelve times as many carcinogenic compounds, and is chemically active up to forty times longer in the lungs than tobacco.
enviromental tobacco smoke
Tar is a sticky black substance which sticks to your lungs, from cigarette smoke. It can turn your lungs from pink to black, causing many health problems. It can cause lung cancer which can cause death. Tar can also cause very technical medical problems within the lungs!