According to neighbors, at that time, all three people in this family had symptoms such as dizziness, cough and fatigue. At first they thought it was gas poisoning, so they asked their neighbors to call the police. The police who rushed to the scene immediately took measures and invited rescuers from fire and gas companies to come to the rescue, but no gas leakage was found. After investigation, it turned out that this family smoked wormwood in the house, and the whole family was poisoned because of poor ventilation.