A chemical plant fire that ignited Sunday has left more than 90,000 residents of a Georgia county sheltering in place. The big picture: Air quality surveys detected chlorine, a harmful irritant, in the air emitting from the Conyers,

People in the northern part of Rockdale County were ordered to evacuate and others were told to shelter in place with windows and doors closed.

A weekend fire that sent a massive plume of dark smoke into the Georgia sky has led to complaints about a strong chemical smell and haze several miles away across metro Atlanta, where some schools canceled outdoor activities and residents living near the fire sheltered at home.