What was found
SMOKE IN CABIN AND COCKPIT. VERBAL TURNOVER FROM CREW. SMOKE APPEARED AFTER LANDING AND EXITING RUNWAY. RAN APU, OPERATED PACKS, FOG APPEARED BRIEFLY, FOG CLEARED, NO SMOKE, RAN NR 1 AND NR 2 ENGINES AT IDLE FOR 5 MINUTES. PER 71-00-00-710-006, CLEARED PNEUMATIC DUCTS OF MOISTURE, BELIEVE CONDITION OCCURS DUE TO SNOW REMOVAL, ENGINES PICKING UP MOISTURE, AIRCRAFT OK FOR SERVICE.