You could have driven through a cloud of smoke Wednesday afternoon in Kewaunee County, and not because anyone was driving fast. The Luxemburg Fire Department and the Kewaunee County Sheriff’s Department responded to three separate grass fires along State Highway 54 after 12 p.m. between Casco and Rio Creek. The fires were quickly contained before they could spread far into farm fields or up embankments closer to the road. Traffic did have to slow down through the area due to the heavy smoke crossing the road and speed control measures to allow for firefighters to have the space to safely work. Luxemburg Fire Chief Lew DuChateau said shortly before 5 p.m. that they did not find anything suspicious that would have started the fires.