Nasal odor is mainly seen in diseases such as atrophic rhinitis and fungal infections of the nasal cavity. The first step in treatment is to consider a bacterial culture of the nasal cavity to see what kind of bacteria or fungus is present. The treatment can be done by spraying the nasal cavity with sea salt water, which mainly acts as a nasal cleanser. You can also use medication, such as streptomycin nasal drops, on the nose. Also use medications that constrict blood vessels to clear the nasal passages and open the natural openings of the sinuses, such as Daphnin. To see if there is a purulent bacterial infection, such as sinusitis, antibiotics, such as cephalosporin antibiotics, can also be given at the same time if there is a high level of pus nasal discharge. In short, it is important to make a clear diagnosis and then give the appropriate treatment.