As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT, PAX IN 42AB SMELLED SMOKE. UPON FURTHER INVESTIGATION BY FLT ATTEND, ELECTRICAL SMELLING SMOKE CONFIRMED AT 42AB AND BY DOORS 3L AND 3R. THE SMELL DISSIPATED ON DESCENT BUT STILL LINGERED. INSPECTED LIGHTS, NO PROBLEMS FOUND.