Patients with colds have a nasal sound, which means that the upper respiratory tract infection causes a heavy nasal sound. It is mainly due to the resonance during nasal articulation. After an upper respiratory tract infection, the inner mucous membrane of the nose becomes edematous and secretes mucus, like snot, which blocks the airway, so a nasal sound occurs during pronunciation. When you have a cold, bacteria and viruses will come out to mess up and affect the nasal mucosa, and the symptoms of inflammation, congestion and swelling will occur, causing problems with the pronunciation of the nose. Therefore, when treating rhinitis, you should apply anti-viral and anti-bacterial medication to make the nasal mucosa secrete less nasal mucus, which will also reduce the occurrence of nasal sounds.