inclusion criteria: * confirmed diagnosis of covid-19 by real time polymerase chain-reaction for sars-cov-2 or serological tests for sars-cov-2 antigens.\\ * olfactory dysfunction confirmed by connecticut chemosensory clinical research test (cccrc-t).

inclusion criteria: * confirmed diagnosis of covid-19 by real time polymerase chain-reaction for sars-cov-2 or serological tests for sars-cov-2 antigens.\\ * olfactory dysfunction confirmed by connecticut chemosensory clinical research test (cccrc-t).

inclusion criteria: - confirmed diagnosis of covid-19 by real time polymerase chain-reaction for sars-cov-2 or serological tests for sars-cov-2 antigens.\ - olfactory dysfunction confirmed by connecticut chemosensory clinical research test (cccrc-t).

inclusion criteria: - confirmed diagnosis of covid-19 by real time polymerase chain-reaction for sars-cov-2 or serological tests for sars-cov-2 antigens.\ - olfactory dysfunction confirmed by connecticut chemosensory clinical research test (cccrc-t).