What was found
(CAN) BURNING SMELL FROM TOILET OBSERVED BY CABIN CREW. RIGHTHAND GENERATOR SWITCHED OFF. EMERGENCY DECLARED. AIRCRAFT LANDED SAFELY AND PASSENGERS DISEMBARKED ON RUNWAY AND TAKEN BY BUS TO TERMINAL. TOILET AND PANELS CHECKED BY FIREFIGHTERS. NO TRACE OF FIRE FOUND. AIRCRAFT TOWED TO GATE AND PASSENGERS BRIEFED BY COMMANDER.INVESTIGATION OF THE AIRCRAFT SHOWED A BURNED AND MELTED HOLDER FOR THE FLUORESCENT TUBE IN THE LAVATORY THAT HAD CAUSED THE SMOKE/SMELL.