What was found
PURSER REPORTED STRONG ELECTRICAL BURNING ODOR AT ROW 39 TO 42. PER INBOUND CREW THERE WAS NO ELEC OR BURNING ODOR. NO FUMES. ODOR WAS A LIGHT AND SWEET IN NATURE. AFTER PASSENGERS AND BAGS REMOVED RAN AND BURNED OUT PACKS. RAN BOTH ENGS WITH BLEED ON WITH PACKS ON AND ALL CABIN SYS ON. ODOR NO LONGER PRESENT. IAW TSM 05-50-00-810-831, ODOR CLASSIFIED AS TYPE 10 MISCELLANOUS. ALSO IAW AMM 05-51-10-200-801 INSPECTION AND CHECK FOR ODORS. CREW FILLED OUT SMOKE AND ODO CABIN CREW NOTICED AN ODOR DURING CLIMB, AIR RETURN.