Clinical applicability of the study
Considering the clinical relevance of the current investigation, results can be implemented effortless into clinical routine. The awareness for symptoms of qualitative OD must be raised among the medical profession. Parosmia and phantosmia can be easily assessed based on straightforward questions with binary outcomes (yes/no), the use of validated questionnaires, or the simple grading of parosmia, with questions on (i) frequency [daily, not daily], (ii) intensity [not intense, intense], (iii) social impact [present, absent].9 Since OT has become the recommended first-line treatment protocol for certain causes of smell loss1, consideration of predictors for relevant recoveries after OT, such as parosmia might not only calibrate patients’ expectations more appropriately but also comfort patients with smell loss that may otherwise be distraught by distorted odour perceptions.