Key points
1. The aim of this study was to evaluate the effectiveness of olfactory training (OT) in patients with CRS after sinonasal surgery. 2. Patients were divided into an OT group that received frequent short-term exposure to various odors over a 12-week period, and their olfactory function was compared to that of a control group that did not receive post-operative OT. 3. OT patients exhibited significantly higher total TDI scores compared to non-OT patients at the end of 3 months. In the subset analysis, the odor identification scores differed between the two groups after 3 months. 4. Age, sex, median duration, and LM score at baseline assessment were not correlated with recovery of olfactory function. 5. The group with anosmia at baseline assessment showed a significantly higher increase in KVSS-II test results compared with the other patients
Keywords: Sinonasal surgery; Olfactory recovery; Olfactory training