The causes of sneezing odor include oral diseases, rhinitis, etc. If the symptoms persist, you should consult a doctor in time to find out the cause. 1. Oral diseases: for example, dental calculus, etc., caused by plaque and tartar deposits, deposited on the surface of teeth or restorations, not paying attention to oral hygiene, increased salivary viscosity, etc. can also induce the formation of dental calculus. Patients can appear oral odor, which causes sneezing and stinking. 2. Rhinitis: for example, atrophic rhinitis. Patients can appear nasal congestion, nasal crusts, nasal cavity with thick purulent secretions, etc., serious patients often have a special odor when exhaling, which can also cause sneezing odor. Chronic rhinitis, sinusitis and other related diseases can also lead to sneezing odor. In addition, other causes may also lead to sneezing odor, should be timely consultation, identify the cause of the disease, if necessary, targeted treatment.