What was found
-BURNING SMELL AFTER LANDING- AFTER CLEARING RUNWAY, FA CALLED TO SAY SEVERAL PAX SMELLED A BURNING SMELL. THEY COULD SMELL IN THE COCKPIT AS WELL. DOOR WAS OPENED, THE SMELL WAS STRONGER IN THE COCKPIT. - PERFORMED SYSTEMS CHECKS IAW AIRBUS FIM, AND RAN BOTH ENGINES, NO SMELL NOTED. COULD NOT DUPLICATE.