Before you driving - it is best to open the window first.
Open the window to dissipate heat and then turn on the air conditioner, which is also more fuel efficient!

Remind you again for the health, it is best to open the window first before you 
driving.

People who drive should pay attention. According to a study by the University of California, the car's dashboard, sofa, interior and fragrance will evaporate the carcinogen "benzene."

Benzene compounds are very strong carcinogens, and they are also very strong bone marrow toxic substances. They cause anemia in the general population or rare white blood cells. If exposed for a long time, leukemia is the risk of blood cancer, and some pregnant women will abort. 

Compared with the normal standard value of 50 micro grams per cubic meter of benzene in the room, 400 to 800 micro grams of benzene is contained in a closed car at room temperature. If exposed to the sun for 1 hour, the temperature exceeds 60 degrees Celsius, and the benzene content is as high as 2 thousands to 4 thousand micro grams, more than 40 times the normal standard, motorists are not immune to inhaling excess benzene.

"Your car is parked in the sun for more than an hour, and it doesn't even take an hour. Remember to open the window and open the door, so that you can drive the toxic gas," the doctor said. Benzene is a toxic chemical substance that is metabolized by the liver and kidney. It is difficult for the human body to discharge naturally. It can only remind people to open the window before driving.