How to prevent? 1. Keeping air circulation is the key to avoid poisoning, the key is to keep the room air circulation; when the weather turns warm and the air pressure is low, be sure to wait until the coal is completely burned out before going to sleep. Those who take central heating should also be vigilant, and water heaters and gas should not be placed in the rooms where family members are active. 2, when eating hot pot with coal, be sure to pay attention to indoor ventilation. In addition, residents who are in a position to do so can install carbon monoxide alarms in their kitchens, living rooms and all areas where there are sources of carbon monoxide poison. 3, carbon monoxide poisoning can also occur in the car. When the car stops running, the driver should not rest inside the car with the air conditioner on for a long time, and if he needs to rest inside the car, he should open the windows for ventilation. What should I do if I get gas poisoning? 1.Patients should be allowed to leave the poisoned environment as soon as possible and immediately open the windows and doors to circulate the air. 2.Patients should rest quietly to avoid aggravating the heart and lung burden and increasing the consumption of oxygen after activity. 3.With autonomous breathing, give oxygen inhalation adequately. 4.Patients with delirium must be carried out of the poisoned environment as soon as possible, and in the shortest possible time, check the patient’s respiration, pulse and blood pressure, and carry out emergency treatment according to these conditions. 5.For respiratory and cardiac arrest, perform artificial respiration and cardiac compressions immediately. 6.Call 120 emergency services and emergency doctors to the scene to save the patient. 7.After the condition is stabilized, escort the patient to the hospital for further examination and treatment. 8.Strive for early hyperbaric chamber treatment to reduce sequelae. Even if it is mild or moderate, hyperbaric oxygen chamber treatment should be performed.