As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE TOILET CAUTION MESSAGE AFTER TAKEOFF. FLIGHT ATTENDANT CALLED AND ADVISED FLIGHT CREW CABIN WAS FILLING UP WITH SMOKE. SMELLED LIKE BURNT RUBBER, ACCORDING TO FLIGHT ATTENDANT. REMOVED AND REPLACED RT ENGINE NR 1 CARBON SEAL IAW MM 72-00-00. ENGINE CHECKED GOOD. OK FOR SERVICE.