What about the persons who breathe through their mouth as they suffer from asthma or even from common cold?
Such situations of mouth breathing are temporary. As soon as the cold or chest congestion passes away, breathing through nostrils should be resumed. Even during cold, whenever the nose passages clear, the patient should try to breathe through nostrils.
This is because o?ur nasal passages are created to humidify, clean and warm the incoming flow of air due to the lay?ers of protective mucus. This thin layer of mucus can trap about 98-99 percent of bacteria, virus?es, dust particles, and other airborne objects. The thin layer of mucus moves as a long carpet fro?m sinuses, bronchi and other internal surfaces towards the stomach. Therefore, these objects, tr?apped by the mucus, are discharged into the stomach where GI enzymes and hydrochloric acid? make bacteria, viruses and fungi either dead or weak.
When the mouth? is used for breathing, this route is wider, shorter and almost straight. Then these airborne o?bjects can get into the lungs alveoli and the blood, creating biochemical stress for the immune ?system ???. More stress is also created for organs of elimination (liver, skin, kidneys and GI p?atches). ????