OLFACTORY AND GUSTATORY SENSE IMPAIRMENT IN COVID-19 PATIENTS: PREVALENCE, SYMPTOM DURATION, RELATION TO SMOKING, ALCOHOL CONSUMPTION AND MOOD DISORDERS Introduction. Impairment of olfactory and gustatory senses are common symptoms of COVID-19 disease, caused by SARS-CoV-2. In most cases, they are reversible and are negatively related to disease severity, exact cause is still under question. Aim. Study the prevalence of olfactory and gustatory disorders in COVID-19 patients, their duration, characteristics in specific patients, symptoms relation to disease severity, relation of alcohol consumption, smoking to disease course and symptoms and mood disorders triggered by the infection. Conclusion. Most young patients experienced mild course of COVID-19 infection. Predominant symptoms were fatigue, anosmia, dysgeusia, headaches, fever, myalgia. Positive correlation was found between age and anosmia/dysgeusia duration, between disease severity and anosmia duration more than 3 weeks, between alcohol abuse and anosmia duration. Negative correlation found between smoking and anosmia duration, which need further investigation. References: 1. American Association of Family Physicians: Case-finding instruments for depression: two questions are as good as many. J Gen Intern Med. 1997;12:439–45. 2. Foster KJ, Jauregui E, Tajudeen B, Bishehsari F, Mahdavinia M. Smell loss is a prognostic factor for lower severity of COVID-19. 3. Yonghyun Lee, Pokkee Min, Seonggu Lee, and Shin-Woo Kim. Prevalence and Duration of Acute Loss of Smell or Taste in COVID-19 Patients. J Korean Med Sci. 2020 May 11.