It's still present in a lot of avgas! (Fuel for airplanes) Obviously much less impactful than being surrounded by lead-spewing cars, we haven't totally stopped lead-spewing generally yet.

It would be interesting to know how much leaded avgas specifically affects people. Clearly most of it is emitted high up in the atmosphere but there's still a lot of idling and taxiing around airports...

The smell gets almost unbearable inside the plane as it sits on the tarmac.

Elevated lead levels are found in the blood of airfield employees. https://www.cdc.gov/niosh/hhe/reports/pdfs/2012-0115-3186.pd...

That was in 2012, I'm sure things have changed a bit in aviation since then.

It can't be good that aircraft fly overhead every minute or two.