Nicotine is a dangerous chemical found in cigarettes, it is accompanied by two other very harmful chemicals. These are

tar and carbon monoxide. Tar is a sticky substance that coats the lungs and can lead to various respiratory issues, while carbon monoxide interferes with the body's ability to carry oxygen to cells, causing damage to the heart and other organs. All three of these chemicals are linked to serious health problems, including lung cancer, heart disease, and respiratory issues.