When there is a problem with the nasal cavity’s own cleaning system, bacteria, dust and other substances gather in the nasal cavity for a long time and cannot be discharged on their own, you can often smell an odor when sneezing, which may be the smell produced by the bacteria and dust that accumulate in the nasal cavity and are discharged into the air with the impact of airflow.
This condition can be seen in the nose or in systemic related diseases. First, the more common one is a foreign body in the nose. Most often seen in children, foreign bodies remain in the nasal cavity for a long time, resulting in inflammatory changes in the nasal mucosa and increased secretions, at which point if one sneezes, one or the person next to one can smell the obvious foreign body. Secondly, patients with rhinitis, especially those with atrophic rhinitis, have more dry crusts in the nasal cavity and the lack of cilia exclusion function in the nasal cavity, leading to a large number of bacteria and other reproduction. These patients often cannot smell the odor themselves, and when they sneeze, people around them can often smell a foul smell. In addition, malignant tumors of the nasal cavity and sinuses often cause a special odor, which some doctors call the odor of cancer, and these patients are able to smell a particularly unpleasant odor when they sneeze.
In addition to diseases of the nose itself, other diseases may also cause a bad smell when sneezing. For example, in indigestion and stomach-related diseases, abnormalities in the digestive function of the stomach, along with the upward impact of airflow when sneezing, will be discharged through the nasal cavity, when one can often feel an odor. In addition, tonsillitis and inflammation in the mouth may also lead to the appearance of odor when sneezing.
Therefore, if you find that you have a bad smell when sneezing, you can use saline to cleanse your nasal cavity first.