As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEN - ON TAXI OUT FOR FLIGHT 4331, FLIGHT ATTENDANT REPORTED A EXTREME BURNING SMELL (RUBBER) THAT WAS CAUSING PEOPLE'S EYES TO WATER. RETURNED TO THE GATE. MAINTENANCE INSPECTED THE COMPUTERS IN THE AVIONICS BAY AND PERFORMED A ENGINE RUN EQUAL TO CONDITIONS AT TAXI OUT. NO DEFECTS OR ODORS WERE FOUND. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.