Why Is My Nose Stuffed up When I Get .a Cold?

People need to breathe through their noses all the time. Usually the nose works well. But why is the nose stuffed up when a person gets 3 cold? It is the germs and viruses that are making trouble. The function of the mucous membrane is to make the cold air warm and moist to suit the needs of the body. When a person gets a cold, the mucous membrane is inflamed and swollen because of the germ and viruses . So the nostril becomes narrower arid a lot of mucus is produced. In this way, the nostril becomes stuffed up and can not breathe very well.