What was found
FLT#122, MBJ-MCO. 'HAD FUME WITH APPLICATION OF T/O POWER AND IN CLIMBS REFERENCED FCOM 1 ODOR ISOLATION CHECKLIST ISOLATED TO POSSIBLE PACK 1. TURNING PACK 1 OFF FUMES APPEARED TO DISSIPATE. FOUND SMELL OF FUMES REMAINED THROUGHOUT THE FLIGHT FUMES RETURNED IN DESCENT WITH HP 2 VALVE; PERFORMED APU BLEED, ENG 1 BLEED, ENG 2 BLEED TO BOTH PACKS SYSTEMS IAW AMM 05-50-00-810-831-A. NO PRESENCE OF FUMES OR ACRID ODOR COULD BE DETECTED AT THIS TIME. FOR PRECAUTION, PERFORMED LEVEL A DECONTAMINATION OF ECS SYSTEM IAW AMM 21-00-00-615-802. ECS SYSTEM OPERABLE. A/C OK FOR CONT SVC.'