The plume of smoke rising from BioLab as seen from Old Covington Hwy continued on Thursday, Oct. 3, 2024 in Conyers. A Sunday fire at the chemical plant in Conyers has had agencies monitoring the air quality since then as crews try to neutralize the site. Rockdale County officials said that the plume is changing colors as workers remove debris. GEMA has advised anyone who notices a chlorine odor in the air to limit their time outdoors. (John Spink/AJC)