As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, SMOKE AND FUMES ENTERED THE CABIN WITH ASSOCIATED LAVATORY SMOKE DETECTORS ACTIVATING. AIRCRAFT RETURNED TO AIRPORT. MAINTENANCE FOUND WATER SEPARATORS SATURATED WITH OIL. MAINTENANCE REPLACED THE WATER SEPARATORS AND PERFORMED ENGINE BURN OFF PROCEDURE. NO SMOKE OR FUMES PRESENT, AIRCRAFT RETURNED TO SERVICE.