For many luxury car owners, the purchase is to obtain safety and enjoyment. They believe that the main models of world-famous car brands worth hundreds of thousands of yuan are superior in all aspects. However, many car owners get unbearable interior pollution. At first, individual car owners only thought it was caused by the peculiar smell of the new car and the poor exhaust of the air conditioner. But when car owners began to complain to each other, they found that this was not just a person's experience.