- patients <18 years of age patients who are unable to provide informed consent - anosmia improved before covid19 recovery, - pregnancy - patients who will not complete the follow up period. - patients without a positive covid-19 pcr result obtained through nasopharyngeal --swab - patients with a covid-19 diagnosis but without self-reported anosmia --patients with severe covid-19 disease as defined by the mouth sinai health system --treatment guidelines for sars-cov-2 (requiring high flow nasal cannula, non-rebreather, cpap/bipap, or mechanical ventilation or patients requiring pressor medication or ----- - patients with evidence of end organ damage) - patients with pre-existing self-reported olfactory dysfunction - patients with a history of chronic nasal/sinus infections (rhinosinusitis) or history of endoscopic sinus surgery - hypercholesterolemia - hypertriglyceridemia - patients using nasal steroid sprays or irrigations for any reason - patients who are prisoners of the state - patients who have psychiatric or developmental disorder conditions that may impair ability to provide informed consent - permanent blindness in one eye - history of iritis, endophthalmitis, scleral inflammation or retinitis 15-90 days of retinal detachment or eye surgery - the competent physician considered it inappropriate to participate in the study

- patients <18 years of age patients who are unable to provide informed consent - anosmia improved before covid19 recovery, - pregnancy - patients who will not complete the follow up period. - patients without a positive covid-19 pcr result obtained through nasopharyngeal --swab - patients with a covid-19 diagnosis but without self-reported anosmia --patients with severe covid-19 disease as defined by the mouth sinai health system --treatment guidelines for sars-cov-2 (requiring high flow nasal cannula, non-rebreather, cpap/bipap, or mechanical ventilation or patients requiring pressor medication or ----- - patients with evidence of end organ damage) - patients with pre-existing self-reported olfactory dysfunction - patients with a history of chronic nasal/sinus infections (rhinosinusitis) or history of endoscopic sinus surgery - hypercholesterolemia - hypertriglyceridemia - patients using nasal steroid sprays or irrigations for any reason - patients who are prisoners of the state - patients who have psychiatric or developmental disorder conditions that may impair ability to provide informed consent - permanent blindness in one eye - history of iritis, endophthalmitis, scleral inflammation or retinitis 15-90 days of retinal detachment or eye surgery - the competent physician considered it inappropriate to participate in the study