As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED SHORT-LIVED PUNGENT ODOR IN CABIN DURING FLIGHT. NO SMOKE OR HAZE OBSERVED. SMELL WENT AWAY AFTER A FEW SECONDS. MX PERFORMED PACK 1 AND 2 OPERATIONAL CHECKS, CHECKED CEILING LIGHTS, COULD NOT DUPLICATE SMELL OR ODOR IN THE GALLEY AND CABIN. A/C WAS APPROVED FOR RETURN TO SERVICE.