What was found
FLT 1003, JFK-SJU. ACRID SWEET ODOR OBSERVED IN THE COCKPIT, DESCENDING THROUGH 11,000 40 MILS NW OF SJU. THE ODOR IN THE FLIGHT DECK ONLY AND WAS PERSISTED FOR THE DURATION OF THE FLIGHT. AFTER APU START AFTER LANDING, THE ODOR INTENSIFIED. TROUBLESHOT IAW TSM BD500-A-J21-22-00-04AAA-423A-A, NO DEFECTS FOUND. RAN BOTH ENGINES & APU & FOUND NO ODOR. WHEN WE OPENED FWD LAV DOOR, FOUND A PINE TREE AIR FRESHENER THAT DESCRIBES THE ODOR DESCRIPTION OF THE PILOTS INSIDE THE COCKPIT. ACFT OK FOR SERVICE.