As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2886, THE CREW REPORTED A BURNING SMELL WHILE TAXIING IN AND WAS STRONGER IN INTENSITY AS THE PARKING BRAKE WAS SET, AND WAS FOUND TO BE STRONGER IN THE MAIN CABIN DOOR / GALLEY AREA. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND THE SMELL TO BE COMING FROM RESIDUAL SEALANT ON THE NUMBER FOUR STATIC PORT WHICH HAD BEEN CHANGED PREVIOUSLY, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.