Some models have a plastic odor when you first purchase them, which can alter the taste of your food. To get rid of this, you need to wash the components with warm soapy water, rinse out the inside, and then wipe it all down with a paper towel. Then reassemble it and run it for a few minutes on high heat. When cooking, there should be only a slight odor from the food you’re using, though it isn’t the greasy odor that you would get from deep-frying, and is easily dispersed with an open window or a kitchen fan.