The amount of mercury in a thermometer is relatively small and generally not enough to cause poisoning. If a mercury thermometer breaks, the mercury inside will evaporate and form mercury vapor in the air. Under normal conditions, the amount of mercury released from a broken thermometer is insufficient to cause poisoning in those exposed. However, if a large amount of mercury vapor is inhaled through the respiratory system, or if there is prolonged exposure, mercury poisoning can occur. Additionally, mercury poisoning may result from handling broken mercury with bare hands and then transferring it to the mouth. Therefore, if a thermometer breaks, it is important to immediately open windows and doors to ventilate the area, then carefully collect the mercury in a sealed container and dispose of it at an appropriate outdoor waste facility. During this process, it is crucial to avoid using a mop to clean up the mercury, as it will stick to the mop or cloth. Do not touch the spilled mercury directly with your hands; instead, wear a mask and gloves for protection. Once collected and securely sealed, dispose of it properly and never flush it down the drain or toilet. Mercury is generally not absorbed through the digestive tract, but if ingested, it is recommended to consume milk, soy milk, or similar substances to promote excretion and help eliminate the mercury from the body.