As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AS A RESULT OF A VERY STRONG ODOR IN ROWS 25-27 SEATS D, E AND F. THE CREW ELECTED TO RETURN WHERE AN OVERWEIGHT LANDING OCCURRED. ENGINE RUN ACCOMPLISHED OF EACH ENGINE FOR 30 MIN WITH NO ODOR OF MUSKY SOCKS. SEAT CARPET REPLACED AND AREA DEODORIZED AS REQUIRED.