As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT - FLT945 - EN ROUTE FROM ROC TO CLT, CREW REPORTED EXHAUST FUMES IN CABIN AND FLIGHT DECK. FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND THE LEFT RECIRCULATION FAN INOPERATIVE DURING OPERATIONAL CHECK. REPLACED THE LEFT RECIRCULATION FAN AND VENTILATION FILTERS. SYSTEM CHECKS GOOD. RAN AIR FOR EXTENDED TIME. NO ODORS NOTED.