Key Points:
- COVID-19 often cause prolonged olfactory dysfunction.
- This study evaluated the relative burden of the COVID-19-related
disease in a single-centered cohort of POD patients.
- COVID-19-related POD was diagnosed serologically.
- In the COVID-19 era, the local burden of POD increased two-fold.
- It is important to use pleiotropic approach and robust measures, when
we assess OD.