Olfactory disorders are frequently reported by adults and can significantly affect their overall quality of life. These problems can manifest in both quantitative and qualitative ways. The incidence of olfactory disorders exceeds 20%, with 15% experiencing hyposmia (reduced sense of smell) and 5% experiencing anosmia (complete loss of smell). Various factors contribute to these disturbances, including inflammatory conditions in the sinonasal region, viral upper respiratory tract infections, head trauma, aging, neurodegenerative diseases, and exposure to toxic substances. A comprehensive approach is essential for accurately diagnosing and managing olfactory disorders. This includes a thorough assessment of medical history, nasal examination with endoscopy, psychophysical olfaction testing (the most common diagnostic method), subjective evaluation, and, in some cases, imaging studies. The choice of therapy for olfactory disorders depends on the underlying cause. Treatment options may include pharmaceutical agents, such as corticosteroids, and olfactory training, which has been shown to be effective in addressing many causative factors.