Note: I am not a doctor, and the information provided below is for reference only. If you have serious health problems or your nasal congestion persists, please consult a doctor or professional medical staff in a timely manner. The following is a procedure for raw onion fumigation based on traditional folk methods, but you must pay attention to safety during the operation to avoid burns or other accidents: 1. Material preparation • Choose a fresh onion, wash it and cut it into slices or cubes to facilitate the release of its volatile components. • Prepare a pot of water, preferably about 1 liter (depending on the size of the steam container). 2. Heating and preparing the container • Boil water and pour it into a large heat-resistant bowl or deep plate. • Evenly place the chopped onions in the hot water to allow the ingredients in the onions to gradually release into the steam. Some people also choose to heat the onions slightly before using them for fumigation. 3. Fumigation operation • Keep a safe distance between your head and the container. The usual method is to put your face close to the container containing hot water and onions, and wrap your head and the container with a clean towel to form a simple "tent" to capture the steam. • Inhale the steam slowly, and be careful not to get your face too close to avoid burns. • The recommended fumigation time is about 10 to 15 minutes. If you feel too hot, uncomfortable breathing or stinging eyes during the process, stop immediately. 4. Precautions • Temperature control: Make sure the water temperature is moderate, and wait for the steam temperature to drop to a temperature that will not burn your face and respiratory tract before starting to inhale. • Environmental ventilation: The room in which you are operating should be properly ventilated during the operation to avoid dizziness or discomfort caused by long-term inhalation of too concentrated steam. • Personal reaction: Since onions themselves produce pungent odors, they may sometimes cause slight irritation to the eyes or respiratory tract. If you are sensitive to onion ingredients, it is recommended to operate with caution. • Frequency of use: Do not use this fumigation method too frequently, generally once a day or once every other day, to avoid additional burden on the respiratory tract. 5. Other tips • In addition to onions, other mild herbs (such as mint, eucalyptus leaves, etc.) can also be used for fumigation, but they also need to be used with caution and are best performed under the guidance of professionals. • Fumigation is an auxiliary relief method. It may have a certain effect on nasal congestion in some people, but it is not suitable for all cases. Especially if the nasal congestion is accompanied by fever, severe infection and other symptoms, it is recommended to consult a doctor as soon as possible. Please assess your health status before using any home remedies to ensure safety during the operation. If you feel serious discomfort during the operation, you should stop immediately and seek professional help.