As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEG - UPON INITIATING DESCENT, AIRCRAFT BEGINS TO SMELL OF GYM SOCKS. MAINTENANCE REMOVED AND CLEANED LEFTHAND FLOOR MIXER SUPPLY DUCT IAW 21-23-27. REINSTALLED DUCT, PERFORMED OPS AND LEAK CHECK IAW 21-20-00, NO LEAKS NOTED. RAN AIRCRAFT BLEED AIR FOR SEVERAL MINUTES, NO UNUSUAL ODOR NOTED. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.