A300
Flight Crew Last 90 Days 25; Flight Crew Total 10700; Flight Crew Type 3400
Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Flight Crew Returned To Gate
Aircraft
Shortly after engine start; we noticed an odd smell in the cockpit. We finished our checklist and began taxiing and the smell became stronger. Shortly after; one of our jump seaters came forward and said they had smoke in the supernumerary area. Then we started to visually see the smoke in the cockpit with a very strong odor. I selected off the galley power shed switch (with no apparent result in decreasing the smoke) and we received a clearance to taxi back to the gate and asked for assistance. The fire folks at [the airport] responded quickly; the stairs were moved to the airplane after we shut down and we exited the aircraft normally.
[No substantive additional information was provided in the secondary narrative.]
An A300 returned to their departure gate when the flight crew noticed smoke and odors during initial taxi. No report of findings.