As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED SULPHER SMELL ON FINAL IN COCKPIT ON APPROACH IN DEN. AN EMERGENCY WAS NOT DECLARED, AND THE AIRCRAFT LANDED WITHOUT INCIDENT AT DEN. MAINTENANCE PERFORMED OPS CHECK OF PACK 1 PER EMB AMM AND REPORTED NO SMELLS PRESENT AT THAT TIME. A/C WAS THEN RETURNED TO SERVICE.