(July 1, 2020, 4:03 PM EDT) -- CHARLESTON, S.C. — A Texas man on June 30 sued 3M Co. and other makers of the firefighting agent known as aqueous film forming foam (AFFF) in South Carolina federal court contending that he has been injured by per and polyfluoroalkyl substances (PFAS), which are toxic chemicals in AFFF. He also says the companies knew the danger that PFAS pose to human health (Patrick Kelly McDaniel v. 3M Company, et al., No. 20-2489, MDL 2873, D. S.C.)....