Recently, many household appliances have been marketed with ozone functions, and there are also ozone machines specifically for sterilization and deodorization available on the market. However, doctors have pointed out that improper use and prolonged exposure to ozone can cause eye discomfort and, in severe cases, lung damage. (Reported by Zhang Dehou)

Ozone's sterilization power is 3000 times that of chlorine, making it a substitute for chlorine disinfection. It has been widely used in the sterilization of tap water, swimming pools, medical and food products, and packaged water. Recently, in addition to washing machines, air conditioners, and refrigerators being marketed with ozone sterilization and deodorization functions, many people have also installed ozone machines in their cars or indoors to eliminate odors such as smoke. Dr. He Yicheng, the head of the Family Medicine Department at Shutian Clinic, stated that ozone can irritate the mucous membranes of the eyes, nasal cavity, and trachea. Prolonged exposure to ozone can lead to allergic conjunctivitis and allergic rhinitis. Dr. He Yicheng: "Mild damage includes red and itchy eyes, nasal congestion, and runny nose. More severe cases can trigger asthma, leading to chronic bronchial obstruction, which is difficult to reverse!"

Dr. He Yicheng pointed out that people often use ozone machines as air purifiers, keeping the ozone machine on while staying in a room with high ozone concentration, which is an incorrect usage. Dr. He Yicheng: "Ozone has a strong irritating effect on mucous membranes. When using it, people must not be present. After use, it is necessary to ventilate the room for at least 20 minutes to allow the ozone to dissipate before re-entering the room."

Source: http://tw. news. yahoo. com/ 060515/ 4/ 351t7. html