Using raw onions for fumigation to relieve nasal congestion is a folk remedy, and while there is no scientific evidence to prove its effectiveness, many people think it may help. Here is a simple method: 1. **Prepare the materials**: - A fresh onion - A clean knife - A small bowl or plate 2. **Cut the onion**: - Peel the onion and cut it into thin slices. When cutting the onion, try to keep the onion juice on the slices, as this is believed to contain beneficial volatile compounds. 3. **Prepare for fumigation**: - Place the chopped onion in a small bowl or plate. You can choose to place the onion by the bed or on the table so that the volatiles are easier to inhale. 4. **Use**: - Sit or lie down and put your face slightly closer to the onion, but avoid contact to avoid irritating your eyes. - Try to breathe deeply through your nose. During this process, you may shed tears or feel slight discomfort, which is normal. 5. **Fumigation time**: - Perform for 5-10 minutes each time. If you feel discomfort or over-irritation, please stop in time. 6. **Frequency**: - You can do it several times a day as needed, but be careful not to overdo it to avoid irritation to the sensitive areas of the eyes and nose. Before using the raw onion fumigation method, please note the following: - If you are allergic to onions or feel severe discomfort during use, stop using it immediately. - Seek medical advice and regular treatment to relieve severe nasal congestion or other health problems.