What was found
MCO - AFTER INTERMEDIATE LEVEL OFF AT FL220 SMOKE IN COCKPIT VERY SUDDEN & EVIDENT. FIRST CLASS F/A SMELLED SMOKE, ROW 26 PASSENGER INFORMED AFT F/A SMOKE SMELLED. ACCOMPLISHED CABIN SMOKE FIRE PROCEDURE TURNING OFF BOTH UTILITY BUS SWITCHES, BOTH RECIRCULATION FAN SWITCHES & RT PACK CONTINUE SELECT. SMOKE PERSISTED 20 PLUS MINUTES THROUGH LANDING. SMOKE DETECTED COCKPIT THEN FIRST CLASS F/A THEN MID CABIN. F/A REPORTED SEEING HAZE IN CABIN. WHILE PREPARING FOR DIVERSION TO MCO NOTICED LEFT HAND ENGINE VIBRATION 3.0 (AMBER) IN NR 1 POSITION. ALL SYSTEMS OPERATED NORMAL IN DESCENT TO MCO. REPLACED APU, & REPLACED VIBRATION ACCELEROMETER TRANSMITTER. SYSTEM GROUND CHECKED NORMAL OPERATION.