Alaska Airlines flight AS-1506 had to return and make an emergency landing in Seattle, Washington, on February 26th.
The Airbus A320-200 plane took off for Santa Ana, California, but had to turn back after the crew noticed an unusual odor on board.
The plane landed safely. The cabin crew were taken to a hospital for evaluation.
Air France flight AF-229 made an emergency landing in Asuncion, Paraguay, on December 19th.
The Boeing 777-200 plane heading from Buenos Aires, Argentina, to Charles de Gaulle Airport, France, was diverted due to an unusual odor on-board.
The plane landed safely. All two hundred and seventy-four people aboard remained unharmed.
It is believed that the odor was caused due to overheating of an electrical component.