As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CIGARETTE SMOKE SMELL OFF AND ON IN AFT GALLEY. CHECKED ALL APPLIANCES IN AFT GALLEY AND BOTH LAVS FOR ELEC SYSTEM DISCREPANCIES. CHECKED APU INLET-EXH. CHECKED PACK INLETS AND ENGINES INLET-EXH. CHECKED AFT CARGO COMPT, NO MECH OR ELEC DISCREPANCIES OR EVIDENCE OF TOBACCO USE FOUND. OK FOR CONTINUED SERVICE.