Dang. I both live and work within 10 minutes walk from Notre Dame and mostly don't leave the area on a daily basis. I wonder if there is any possibility this is a contributing factor in my recent deteriorating health.
Get a lab test to see if the lead levels in your body are high. Either way will help you to take the next steps and not be afraid.
You can ask for a blood test that measures your lead level in your blood.
Probably also include a hair test. Blood shows what's going on right now, hair includes the last couple of weeks (with some caveats, which the doctor should be aware of so no need to discuss it here, for example hair does not automatically show up in hair proportionally to what was in blood during the time - too many transport phenomena in the body other than mere diffusion).
I now decided that I am going to do this actually, thanks.
If this is linked, then we have a problem considering the population density, tourist flow and all that.