Cigarette smoke contains tar, which can cause irritation to the nasal passage and the lungs, and could potentially harm them.
Carcinogens.
Apex :) Nicotine is the addictive substance that is found on tobacco.
By smoothest do you mean the least damaging to your lungs ?
No tobacco is safe to smoke. Tobacco causes a variety of diseases, including cancer of the lips, mouth, tongue, esophagus and lungs.
Cigarette smoking induces cancer, by damaging the cell's ability to absorb oxygen! The cells are actually poisoned by the thousands of toxic chemicals in tobacco products. The cilia of the respiratory tract are damaged and destroyed. In such a case they do not help the tract remove tobacco smoke and other toxins.
ZERO The smoke will damage your lungs if you inhale it for even just a second.
side stream smoke-smoke coming from the burning tip of a cigarette Mainstream smoke-smoke that comes from the smokers lungs CHEMICALS
All evidence apparently says this is not the case.
You're smoking. You're damaging your lungs. Isn't it kinda obvious?
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.