Some residents east of Atlanta were evacuated and others told to shelter in place after a fire at a chemical plant. Fire Chief Marian McDaniel told reporters that a sprinkler head malfunctioned around 5 a.

A shelter-in-place is now in effect for Rockdale County residents following the BioLab chemical fire. Atlanta residents could also soon be impacted.

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.

Parts of Atlanta were covered by a haze and the smell of chlorine on Monday, and residents are concerned about the health risk of exposure to chemicals. Here's what some experts say.