As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDED UNDER ALERT DUE TO ELECTRICAL SMELL IN CABIN. SUSPECTED RECIRCULATION FAN FAILURE. INSPECTED ALL CEILING/PSU/SIDEWALL LIGHTING, COFFEE MAKERS AND BOTH AIR CYCLE MACHINE OIL LEVELS, YET NO DISCREPANCIES ISOLATED. REPLACED RECIRCULATION FAN AS PRECAUTION.