Parosmia assessment with structured questions and its functional impact in patients with long-term COVID-19-related olfactory dysfunction

Olfactory dysfunction (OD) is one of the most common symptoms of acute and long-COVID-19. QualitativeOD frequently accompanies or follows quantitative olfactory loss . Limited studies to date have combinedboth qualitative and quantitative evaluation of OD . The aim of this study was to estimate the prevalence of qualitative OD and evaluate its functional impact in post-COVID-19 patients by combining a validated questionnaire and a comprehensive olfactory psychophysical evaluation.