As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE DET IN AFT CABIN WENT OFF WITH PUNGENT ODOR THROUGHOUT ACFT. ODOR SUBSIDED AND DETECTORS CEASED ALARM. F/A SEARCH FOUND NO SOURCE OR CAUSE. FLT CONTINUED MTC. CHECKED CABIN AT TIME OF ARRIVAL, NO SMOKE NOTED ANYWHERE. NR 1 ENG WASH PERFORMED THE NIGHT PRIOR.