Back in the old days, gas station attendants would come out and pump gas into your car while you sat in your car... Many gas station attendants ended up with leukemia. The benzene in gas fumes gets absorbed into the bone marrow and stored there ...there are a lot of toxins out there. We just have to try and protect ourselves as best we can. There are a lot of known carcinogens in the food supply that the government refuses to ban because of big money from the food and chemical industries. Total corruption.