Smoking is harmful to human health – we hear this word every day, but we do not know what substances have in cigarette. The content of cigarette was kept secret a long time by manufacturers.

There are more than 4 thousand chemical substances in the content of cigarette. These are the most harmful and dangerous substances.

1. Ammonia - This substance provides the absorption of nicotine into the body.

2. Arsenic - this item is used to kill rats in the fields.

3. 3. Cadmium – Cadmium are used in the battery of mobile phones.

4. Formaldehyde – this substance are used in the process of mummification.

5. Acetone – women use to clean their nails.

6. Propylene glycol - helps nicotine to reach the brain more quickly.

7. Terebantin - this substance is used to clean of dyes.

8. Bhutan – helps to cigarette burning easily.

9. Benzene - is used to petrol fuel and preparations against pests.

10. Lead

11. Nickel