Most people sit in the car and run the air conditioning without thinking.But do you know that this may be really dangerous for you and those around you?The reason for this is that when we leave the car outside we will close the windows. When we leave the shade, 400 to 800 mg of benzene accumulate in the car.For example, if you put the car in the sun at a temperature of 16 degrees Fahrenheit, the amount of benzene that accumulates in the car can rise to 2000 to 4000 milligrams. This is almost 40 times more than the allowed level.When you sit in the car with the windows closed, you will feel like breathing. This affects your liver, bone tissues and kidneys. It takes a very long time to get benzene through the organism.He writes that you should open the windows before running the air conditioner in the manuals of the cars, but he does not write any reason.The air conditioner blows out the warming air inside and the benzine with it, until you start blowing cold air. Benzene is a poisonous substance that causes cancer.Even if you do not get a strange smell when you sit in the car, first open the windows for 1-2 minutes and then start the air conditioner. Keep the windows open for a while after you have started the car.