As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED FUMES IN THE COCKPIT AND FLIGHT 2492 RETURNED TO PIT. THE CREW REPORTED THE FUMES DISPERSED AS THE FLIGHT WENT ON. MAINTENANCE INSPECTED AND PERFORMED OPERATIONAL CHECKS AND THERE WERE NO DEFECTS NOTED. THE AIRCRAFT WAS THEN RELEASED FOR SERVICE.