As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2080, THE CREW REPORTED AN ELECTRICAL OR SULFUR SMELL IN THE COCKPIT AND CABIN DURING TAXI AND CLEARED IN 3 TO 5 MINUTES. THE AIRCRAFT RETURNED TO THE GATE WHERE MAINTENANCE INSPECTED THE AIRCRAFT WITH NO DEFECTS NOTED, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.