Similar to bacon or any other high fat/grease items, there may be some smoking. To decrease the chances of white smoke, make sure the air fryer is clean before using it. Burnt food, leftover crumbs, and grease in the air fryer will smoke. If you want to prevent smoking, you can add a few splashes of water to the bottom of the air fryer before using. Another suggestion is to add some bread to the bottom to soak up the grease as the sausages cook but I feel like that's a waste of good bread!