Sneezing stink suggests that patients may have the following causes: 1, some patients have chronic rhinitis, sinusitis, nasal tumors and other related diseases, the presence of bacterial or viral infections in the nasal cavity, accumulation of secretions, more filth and secretions in the nasal cavity, when patients sneeze the stimulation of airflow will bring out filthy substances, thus appearing odor, clinically very common. 2, some patients have gum diseases, such as gum calculus, Some patients have lung diseases, such as lung abscess, anaerobic lung infection, and infectious lung diseases, and when patients sneeze, the airflow from the lungs with the above-mentioned secretions will also smell bad. 4. Chronic gastritis, Helicobacter pylori infection, when the patient sneezes the contraction of the chest respiratory muscles can also compress the gas in the stomach and esophagus out, thus interspersed with foul-smelling performance. All in all, if a patient sneezes occasionally, the odor is generally not a big problem. If the odor occurs repeatedly, it is best to visit the ENT, respiratory medicine, gastroenterology, stomatology and other departments to see what is causing the odor.