When patients sneeze with the smell of symptoms, often suggests the presence of nasal cavity, sinus region inflammatory infectious diseases, there may be some mucopurulent secretions in the nasal passages, secretions accumulate for a longer period of time, it may produce a bad smell or odor. Some patients may also have a foreign body in the nasal cavity, which is more common in younger children. After a longer period of time, the foreign body in the nasal cavity is susceptible to secondary infections, causing the accumulation of purulent secretions, which can lead to a bad smell or odor. In addition, some patients may also occur in the nasal cavity, sinuses, nasopharyngeal region of various benign and malignant tumors, tumors may also be secondary infection, resulting in some inflammatory secretion accumulation, which can also lead to the emergence of the symptoms of taste.