B737 Undifferentiated or Other Model
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Flight Crew Last 90 Days 22.85; Flight Crew Total 1609.63; Flight Crew Type 1609.63
Distraction
Aircraft Equipment Problem Less Severe; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
General None Reported / Taken
Aircraft
Approximately 15 minutes prior to descent into ZZZ we were informed that a passenger heard a pop and smelled something electrical in the vicinity of row 22. Initially the flight attendants could not verify an odor. As we began our descent; a few more passengers smelled an odor and it was confirmed by one of the flight attendants.  We ran the smoke; fire; and fumes checklist to step X at which point the fumes had dissipated. At no point was any smoke ever noticed and the fumes were only confirmed by a few passengers. By the time we completed the checklist and the odor was gone we were in the terminal area at ZZZ. We elected to land at ZZZ and taxi to the gate as the odor was gone and no evidence of smoke or fire existed.
Air Carrier First Officer reported a fume event at top of descent.  Fumes dissipated before completing the appropriate checklist with no evidence of smoke or fire.