ABSTRACT
Olfactory dysfunction is a serious symptom that requires careful differential diagnosis. The article presents convincing evidence that dysosmia is not only a symptom of rinological pathology, but also a manifestation of various neurodegenerative diseases. Some patients with SARS-CoV-2 have neurological symptoms. Modern studies show that olfactory and gustatory dysfunctions are significant symptoms in the clinical presentation of the COVID-19 infection. The importance of olfactory diagnostics in relatives of patients with hereditary neurodegenerative diseases for the purpose of early detection of pathology is noted. We consider the possibility of introducing new methods for the diagnosis of olfactory dysfunction, which is a promising task both in the field of neurology and otorhinolaryngology, in order to prevent the development of neurodegenerative diseases at an early stage, improve the quality of life and social adaptation of patients.