Usually, when you have a cold, you feel that your mouth has no taste, and the organ that has the problem is the upper respiratory tract. Firstly, the clinical symptoms of tasteless mouth due to acute respiratory tract infection are caused by wind, when wind and dampness invade the body or when viruses or bacteria infect the organism, the clinical symptoms of upper respiratory tract infection appear. Secondly, the sense of smell will be lost first, because there will be congestion and edema in the nose, nasal mucosa is not ventilated or runny nose, and there will be yellow pus nasal discharge at this time, and the sense of smell will be lost first. Thirdly, when the sense of smell is lost, the sense of smell and taste will be lost together, so when the tongue mucosa is also congested, it will aggravate the clinical symptoms of no taste in the mouth. Fourthly, both the sense of smell and taste will be abnormal at the same time, and the clinical symptom of no taste in the mouth will appear.