It is an important public health problem in the world and in our country, and it has the potential to cause addiction because it contains high amounts of nicotine. Among the more than 4000 harmful substances in cigarettes, which can cause many cancers, both nicotine and carbon monoxide reduce blood levels of oxygen and constrict blood vessels throughout your body, including your inner ear. It irritates the Eustachian tube and middle ear drum. It triggers the release of free radicals, which can damage DNA and cause disease. It makes you more sensitive to loud sounds, making you more susceptible to noise-induced hearing loss. Smoking weakens the immune system. It damages the tissues in the nose and throat, making them more susceptible to infections that affect the ears. In studies examining the effects of smoking on the success of surgical and drug treatment of ear, nose and throat diseases, it has been reported that smoking doubles the postoperative recovery time, reduces the success rate of surgery by half, and increases the likelihood of re-operation by 3 times. It is also known that smoking is the most important cause of laryngeal and lung cancer.