As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 4162 - STRONG FUEL ODOR IN CABIN NEAR PASSENGER SEAT ROWS 14 AND 15. INSPECTED AIRCRAFT EXTERNAL DRAINS AND PANELS. OPENED CABIN FLOOR PANELS AND PERFORMED ENGINE GROUND RUNS, BUT NO EVIDENCE OF LEAKS OR VAPORS WAS DETECTED OF ANY KIND. AIRCRAFT RETURNED TO SERVICE. (X)