What was found
DFW - FLT 1488 - AFTER TAKEOFF, FLIGHT ATTENDANT REPORTED WHITE VAPOR OR FOG IN CABIN. AIRCRAFT RETURNED AND LANDED DFW WITHOUT INCIDENT. REPLACED COALESCER BAGS AND PERFORMED PACK BURNOUT. AFTER BURNOUT WAS ACCOMPLISHED. PACKS WERE OPERATED WITH NO LEAKS, ODOR, OR SMOKE NOTED. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)