The goal of this clinical trial is to validate the effectiveness of the modified olfactory training device, the main questions it aims to answer are: Is it possible that the device can treat postoperative olfactory dysfunction in patients with chronic sinusitis? Compared to the conventional device, how efficient is the modified olfactory training device for treating postoperative olfactory dysfunction in patients with chronic sinusitis?
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
The Sniffin's Sticks test
Timeframe: Baseline,Month 3,Month 6,Month 12