Open the fridge and empty out its contents. Leave the doors open so fresh air gets in since the ventilation helps eliminate gas odors.
Remove the shelves and drawers and wash them in warm water and several drops of dish soap.
Spray the inside of the fridge with white vinegar from a spray bottle and wipe down the walls, sides and fixtures with a damp rag. This cleans off the surfaces and helps eliminate smells caused by the gas condensing inside the fridge. White vinegar is also an effective deodorizer.
Wipe down all your food packaging with a damp rag to help clean off any remaining effects from the previous gas leak. Place them back in the fridge once you're done.
Open a box of baking soda and leave it inside the fridge to further help absorb any remaining gas fumes from the previous leak.