The method of using raw onion fumigation to relieve nasal congestion is relatively simple. Here are some steps and precautions: ### Operation steps: 1. **Prepare materials**: - Fresh raw onions (1-2). - A clean bowl or container. - A clean towel or cloth (optional). 2. **Cut onions**: - Cut the raw onions into several slices, or cut them into small pieces to release more volatile substances. 3. **Place onions**: - Place the cut onions in the prepared bowl or container. 4. **Fumigation**: - Place the bowl or container in a comfortable place (such as a sofa, bedside). - You can choose to cover your head with a towel or cloth to enhance the inhalation effect, but make sure you don't feel suffocated. 5. **Breathing**: - Sit down, take a slow, deep breath, and inhale the smell of onions. You can keep it for 5-10 minutes each time. ### Precautions: - **People who are allergic or intolerant to onions**: If you have an allergic reaction to onions, please avoid using this method. - **Fumigation time**: Do not fumigate for too long to avoid discomfort. - **Environmental ventilation**: Make sure the room is well ventilated to avoid discomfort caused by strong onion smell. - **If symptoms persist or worsen**: If nasal congestion persists, it is recommended to consult a professional doctor in time. In this way, the sulfide released by onions can help relieve nasal congestion, but the effect varies from person to person. Hope this helps you!