As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON INITIAL DESCENT FA REPORTED SMELL OF SOMEONE LIGHTNING A MATCH. ODOR DISAPPEARED AFTER LANDING-REF TSM 05-50-00-810-831-A FOUND THE SOURCE OF SMELL TO BE TYPE 9, RELATED TO THE AFT LAV DMI # 249354101. ALSO PERFORMED ENG RUN IAW AMM 71-00-00, NO SMELLS WERE NOTED. A/C OK FOR CONTINUED SERVICE.