Smell/taste disorders are common conditions with a significant impact on quality of life. In September 2021, a specific consultation for patients with smell and taste disorders was initiated at the ENT-HNS (ear, nose, and throat, head and neck surgery) department of UZ Leuven, partly in light of post-COVID-19 related smell disorders. With this observational ambidirectional study, we aim to better map smell/taste disorders in the Belgian/Flemish population. Using standard-of-care diagnostic tests and structured questionnaires, we strive to gain more insight into the severity, impact, and progression/prognosis of smell/taste disorders.