Why is it important to breathe through your nose and not through your mouth?

In the nose there are small villi that filter the air, trapping dust, and also warm and humidify the air. If a person breathes through his mouth, then dirt and dust enter the body, which sink deep into the body, and then cause diseases of the teeth, pharynx, larynx, bronchi. And if the air is cold, then inflammation of the respiratory tract can form. Therefore, you need to learn to breathe through your nose, not your mouth.