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72 Hours. In as little as 72 hours after you quit smoking, your lungs will begin to heal themselves. Airway inflammation decreases and the bronchial tubes begin to relax.Breathing becomes slightly easier and lung functionality begins to increase. Year. During the first year, the cilia in your lungs begin to heal and re-grow. Cilia are the small hair-like structures that keep germs and foreign materials from entering the lungs.
In addition, after you quit smoking, the cilia in your throat and upper airways can grow back and start to function again. Cilia are tiny cells that assist with clearing mucous from the airways and help you to breathe properly.Lung regeneration after smoking usually occurs from one month after quitting until about nine months after quitting. In recent years, there has been a lot of research into growing lungs artificially.ilia are tiny cells that assist with clearing mucous from the airways and help you to breathe properly. Lung regeneration after smoking usually occurs from one month after quitting until about nine months after quitting.