True but leaded fuel for cars has been eliminated years ago. So this is now a major remaining source of environmental lead especially around small airports. I

True but leaded fuel for cars has been eliminated years ago. So this is now a major remaining source of environmental lead especially around small airports. I used to fly 172s and I worried about inhaling the lead fumes and getting sprayed with it during the fuel drain checks. Lead exposure is cumulative and can lead to serious neurological problems later in life. And I've already had a fair share with my electronics hobby (soldering)