"Platelet Rich Plasma for the Management of Post-Viral Olfactory Dysfunction.

Inclusion Criteria: * Adult patients suffering from either post-viral or post-COVID smell loss of any duration, without a history of nasal surgery, nasal polyposis, chronic rhinosinusitis, or intranasal tumors * Patients who are post-COVID must report at least a positive home test on history * Patients with post-viral etiology must have recall of a viral illness that immediately preceded smell loss Exclusion Criteria: * History of olfactory dysfunction predating COVID-19 infection * History of trauma, previous surgery, or obstructive cause of OD (nasal polyps, chronic rhinosinusitis) * Pregnancy * Patients who are unable to provide consent * Patients with known bleeding disorders * Patients with known malignancies