During winter, people often park their vehicles in underground garages for extended periods to avoid the cold. However, poor ventilation in these enclosed spaces can lead to the accumulation of radon—a colorless, odorless radioactive gas. Radon is produced naturally from the decay of uranium in soil, rock, and building materials, and can seep into underground areas through cracks in foundations. Prolonged exposure to elevated radon levels significantly increases the risk of lung cancer; the World Health Organization (WHO) classifies radon as a Group 1 carcinogen.In winter, tightly closed doors and windows further reduce air circulation, allowing radon concentrations to rise quickly in poorly ventilated underground garages. Individuals who frequently enter or linger in such spaces—whether organizing items or waiting for their car to warm up—may unknowingly inhale dangerous levels of radon. To mitigate this risk, it’s advisable to regularly test radon levels in underground garages, install mechanical ventilation or fresh-air systems, and avoid prolonged stays—especially never idling vehicles in enclosed areas. Raising awareness about radon hazards is a crucial step toward maintaining health during the colder months.
冬季由于气温较低，人们常常将车辆长时间停放在地下车库中避寒，同时车库通风条件较差，容易导致一种无色无味的放射性气体——氡气（Radon）在密闭空间内积聚。氡气是天然铀衰变过程中产生的惰性气体，可从土壤、岩石或建筑材料中释放出来，并通过地基裂缝渗入地下空间。长期暴露于高浓度氡气环境中，会显著增加罹患肺癌的风险，世界卫生组织（WHO）已将其列为一类致癌物。尤其在冬季，门窗紧闭、空气流通不畅，地下车库若缺乏有效通风系统，氡气浓度可能迅速升高。车主若频繁出入或在车库内长时间逗留（如整理物品、等待启动车辆等），便可能不知不觉吸入过量氡气。因此，建议定期检测地下车库的氡气浓度，安装新风系统或加强机械通风；同时避免在车库内久留，尤其不要在密闭空间内发动车辆。提高对氡气危害的认知，是保障冬季健康的重要一环。
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