As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGERS IN THE AREA NEAR SEAT 49J EXPERIENCED A BURNING RUBBER SMELL FOR APPROX 5 SECONDS. NO CHANGES IMMEDIATELY PRIOR TO THE SMELL IN ANY OF THE AUDIO/VIDEO EQUIP SEAT POSITION OR AIR VENTS. DELTA MTC PERSONNEL INSPECTED AREA AND EQUIPMENT FOR HEAT DAMAGE AND ABNORMAL CONDITIONS, NONE FOUND. OK FOR SERVICE.