Feeling a smell of smoke in the nose may be caused by chronic rhinitis, sinusitis, cerebrovascular lesions and other factors. 1. Chronic rhinitis: usually associated with pathogenic bacterial infections, lesions for a long time, will lead to local mucosal degeneration and vascular congestion, affecting the sense of smell, resulting in olfactory dysfunction, you will often feel the smell of smoke, may also be accompanied by nasal congestion, runny nose and other symptoms. 2. Sinusitis: it may be related to allergy, infection and other factors, after the lesion involves the olfactory region, it may lead to olfactory dysfunction, and you will feel the smell of smoke in your nose, which may be accompanied by nasal congestion, runny nose, headache and other symptoms. 3. Cerebrovascular lesions: lesions involving the olfactory center or olfactory nerve, abnormal sense of smell, you will feel a smell of smoke in the nose, may also be accompanied by dizziness, headache and other symptoms. If you feel the smell of smoke in your nose and have other abnormalities, it is recommended to consult a doctor as soon as possible to confirm the diagnosis and standardize the medication and treatment.