Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Air Traffic Control Provided Assistance; Flight Crew Diverted; Flight Crew Landed in Emergency Condition; General Maintenance Action
Aircraft
Electrical / sulfuric type burning smell detected in flight deck at 17;000 ft. MSL. [Requested Priority Handling]; went on oxygen and smoke goggles. Determined ZZZ was the closest suitable airport in terms of time. Started the QRH procedures and descent with approach. Upon landing and pulling off Runway XX with CFRs; approximately 5 seconds after bag door EICAS indication; the smell returned for a few seconds. No damage or injuries noted. Smell in flight deck of a mix between ozone (electrical) and a sulfur type odor.Cause: Unknown. We were told that during the previous night's emergency that Maintenance had determined it was an issue with pack 1 and it was placarded inoperative and MEL'd. We still got the same smell today.
EMB-145 First Officer reported 'electrical/sulfuric' fumes during climb and executed an uneventful emergency diversion.