What was found
SHIP 3905 -SMOKE/ODOR EVENT- DURING TAKEOFF A BRIEF MIST EMITTED FROM FLIGHT DECK VENTS ACCOMPANIED BY ODOR. WHILE ENROUTE FLIGHT ATTENDANTS STARTED TO EXPERIENCE MEDICAL SYMPTOMS DUE TO ODOR. ON DECENT, ODOR RETURNED AND FLIGHT CREW DONNED 02 MASKS AND DECLARED AN EMERGENCY WITH ATC. CORRECTIVE ACTION: RAN BOTH ENGINES AT HIGH POWER FOR 30 MINUTES WHILE ISOLATING BLEEDS AND PACKS AND REPLACED RECIRC FILTERS.