What was found
FLIGHT 2218. WHILE CLEANING FWD LAV, CLEANER INFORMED FLIGHT ATTENDANT SHE SMELLED SMOKE. ACCORDING TO FA & FO THE LAV SMOKE MASTE WARNING ILLUMINATED ON EICAS MOMENTARILY. THIS OCCURED AFTER ALL PASSENGERS HAD DEPLANED. REMOVED FROM SERVICE. PERFORMED A GVI INSPECTION OF FWD LAV AREA AND COMPARTMENTS. NO SIGNS OF SMOKE OR FIRE. INSPECTED FWD LAV FIRE BOTTLE PER AMM 26-25-01-200-801-A. NO DEFECTS NOTED. COULD NOT DUPLICATE. RETURNED TO SERVICE. NO PARTS REPLACED.