By AP/IPR/KWMU
St. Louis – St. Louis-area residents are smelling an unpleasant odor that firefighters are working to identify.
St. Louis Fire Department Capt. Bob Keuss said calls started coming in Sunday morning. He said crews have gone out several times in the hopes of identifying the stench, but its source remained a mystery Monday morning.
Keuss said air quality tests have ruled out natural gas and there doesn't appear to be any danger to the public.