EPA Warning: Indiana Plastics Fire

Massive fire breaks out in a facility that is used for recycling and stores plastic and other material in Richmond, Indiana on 4/12/2023 , evacuation orders issued. Those residents who are further than half mile from fire are told by authorities to shelter in place, and keep windows and doors closed. Pets should also be brought inside, the fire will burn a few days.

Anyone know about the great Smog of London, would you be so kind to mention a few key notes of that event, like how many died etc etc....