As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A MILD ELECTRICAL ODOR WAS OBSERVED AT LEFT AFT LAV IN FLIGHT. NO OTHER ADVERSE CONDITIONS WERE NOTED, ONLY THE ODOR. THE FLIGHT CONTINUED TO IAH WHERE IT LANDED WITHOUT FURTHER PROBLEMS REPORTED. MAINTENANCE FOUND T1-2 TRANSFORMER FOR LIGHTS AT AFT LEFT LAV AT FAULT. THE TRANSFORMER WAS REMOVED AND REPLACED, AN OPERATIONAL CHECK WAS GOOD.