A foul smell after sneezing may be caused by oral odor, sinus infection, pearly crypt infection, pharyngeal tumor, gastric Helicobacter pylori infection and so on.
1. Oral odor: It may be that the oral cavity is not often cleaned, inorganic salts gradually precipitate on the surface of the teeth, forming dental calculus, coupled with bacterial adhesion, dental calculus has a foul smell, and after sneezing, there may be a foul smell.
2. Sinus infection: As the sinuses are located deep in the nasal cavity, the sinus openings are connected to the nasal cavity. When there is inflammation in the sinuses, the secretions usually block the sinus openings and the sinus cavities are not well ventilated, which may result in the recurrent infection of the sinuses by anaerobic bacteria, and most of them will have a smelly nasal mucus. Especially when sneezing, the airflow rushes out of the nasal cavity, which may have a foul smell.
3. Pear-shaped crypt infection: the pear-shaped crypt in the laryngopharyngeal area, food is easy to stay embedded, bacterial infection, there is usually a foul odor, so there will be a foul smell after sneezing.
4. Pharyngeal tumor: tonsil tumor, vocal cord tumor, nasopharyngeal carcinoma, etc. Tumor necrosis or invasion of surrounding tissues, causing ulceration, usually after sneezing there is a foul smell.
5. Gastric Helicobacter pylori infection: Helicobacter pylori breaks down stomach contents to produce ammonia-like unpleasant gas, in addition, Helicobacter pylori infection may cause chronic gastritis, gastric ulcers, etc., causing indigestion, and may also have a foul smell after sneezing.
It is recommended to go to the hospital, under the guidance of the doctor, according to the cause of the disease, symptomatic treatment.