Tobacco contains more than 4,000 toxic substances most notably:
Nicotine: one drop on the tongue of dog enough to kill him on the spot as a result of respiratory paralysis. He is responsible for addiction to smoking.
Carbon monoxide CO: A poisonous gas found in car exhaust pipe, reduces the amount of oxygen that reaches to the cells, which explains the inability of older smokers to do the simplest exercise and also explains a heart attack.
Tar: a mixture of several substances that cause cancer experimentally When the animal. Other materials: include ammonia (used to clean bathrooms) and arsenic (used to kill rats).
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cancer and smoking