Thousands of people were told to stay home with their windows shut Monday after a fire at a Georgia industrial plant caused a chemical reaction that prompted around 17,000 people to evacuate Sunday and left potentially harmful chlorine lingering in the air.

On Thursday morning, Atlanta residents will probably wake up to a haze settled over the city and the sharp smell of chlorine, according to state emergency officials.

The chemical plume has put residents in Rockdale County into a shelter-in-place order for the remainder of the week during the evenings into the morning.