What was found
INFLIGHT AT FL 430 PAX COMPLAINED OF SOMETHING BURNING. WE SMELLED IT IN THE FLIGHT DECK., I WENT TO THE BACK & THE ODOR WAS STRONGEST NEAR THE LAVATORY. CREW DONNED MASKS UPON INITIAL SMELL, RAN ALL CHECKLISTS & DIVERTED THE FLIGHT. PERFORMED OZONE CONVERTER CLEANING IAW MM 21-70-00 & WATER SEPARATOR CLEANING IAW MM 21-50-00. OPERATIONS & LEAK CHECKED GOOD. PERFORMED ENG RUNS AT CRUISE POWER SETTINGS. POWERED UP ALL ACFT SYS INCLUDING CABIN ENTERTAINMENT SYS & LIGHTS. ALL SYSTEMS WHERE FOUND OPERATIONAL WITHOUT DEFECTS. CHECKED ALL 110 AC POWER OUTLETS & ALL FOUND OPERATIONAL. VISUALLY INSPECTED COCKPIT, CABIN, LAVATORY & LAVATORY CLOSET. NO DEFECTS NOTED & NO BURNING SMELL NOTED.