They use hot air instead of actual microwaves to create heat, so putting aluminum foil in an air fryer doesn't cause the same alarming spark show. How To Use Aluminum Foil In An Air FryerOnly put a layer of foil on the bottom of the air fryer basket where your food sits, not on the bottom of the air fryer itself. When To Put Aluminum Foil In An Air FryerWhile foil isn't necessary when using the air fryer, it can make your life easier. When Not To Use Aluminum Foil In An Air FryerWhile aluminum foil can be helpful with the cleanup of sticky or crumbly foods, there are certain times you should not put aluminum foil in an air fryer. Even if we are offering air fryer cleaning tips, we cannot help but lay down some great air fryer recipes.