Air Canada passenger plane landed safely back in Sydney on Thursday after the pilot decided smoke in the galley warranted a return two hours into a flight to Vancouver, dpa reported.
"There was some smoke seen in the cabin by the crew - actually it was coming from the oven," Jeannie Foster, Air Canada manager for Australia, told local radio.
"It was just smoke coming from an oven. There were no injuries."
The Boeing 777-233LR with 264 passengers aboard dumped fuel over Sydney before landing with fire crews waiting on the tarmac.
It was not an emergency landing and firefighters did not have to be deployed.