As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AMBER SMOKE TOILET MESSAGE AT ABOUT 10,000 DURING DESCENT, LASTED LESS THAN A MINUTE THEN WENT AWAY. OBSERVED AN ODOR LIKE MACHINE OIL, BUT NOT SMOKE. F/A HEARD SMOKE ALARM IN LAV BUT DID NOT SEE OR DETECTED SMOKE. OPS CHECK OF SMOKE DETECTION SYS IAW AMM 26-16-00, NO FURTHER DEFECTS NOTED.