Maybe its any of the unwashed buildings that are leeching off lead into the air, from decades of caked on leaded petrol: Related but non-london image: https://

Maybe its any of the unwashed buildings that are leeching off lead into the air, from decades of caked on leaded petrol: Related but non-london image: https://external-preview.redd.it/ZjNo0NFwEXGzukjR5ujjin8-e-5ez5bKCLIGEtvzvu0.jpg?auto=webp&s=d11eac71362dec10d4b3112fb483bf640912e12d https://external-preview.redd.it/ZjNo0NFwEXGzukjR5ujjin8-e-5...