As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 7559556) ON TAKEOFF ROLL AIR CONDITIONING SMELLED STORNGLY OF DIRTY SOCKS OR DIRT VACCUUM. SMELL DISAPATED ON CLIMBOUT. PERFORMED PNEUMATIC DUCT BURN OUT AS PER B737 AMM 21-00-01. NO SMELL NOTED. R/R RECIRCULATION AIR FILTERS AS PER B737 AMM 21-25.