As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 598 EN-ROUTE, STRONG ELEC SMELL AT CRUISE COMING THROUGH COCKPIT VENTS 1HR INTO FLIGHT. THE FLIGHT DIVERTED & LANDED WITHOUT FURTHER INCIDENT. R & R AVIONICS EXTRACT FAN 18HQ 21-26-51. NO FAULTS NOTED ON GND AT THIS TIME. R & R AVIONIC VENTILATION FILTER 21-26-43. NO FAULTS NOTED ON GND AT THIS TIME. PERFORMED JC 26L00021001 FOR AIR QUALITY, ABOVE ACTION HAS RESOLVED ALL SMELLS & AIR QUALITY ISSUES. ACFT GOOD FOR SERVICE.