Buffalo shrimp are best on the day they are cooked. As they sit in the refrigerator, they will become a little soggy. You can store them in an airtight container for 2 days. To reheat, add them back to the air fryer for a few minutes or line a baking sheet with parchment paper or aluminum foil. Bake at 375 degrees until they are warm and crisp.  If you know you want to keep the leftovers, store the fried shrimp in one container and the buffalo sauce in a small bowl. Reheat the shrimp then toss in the spicy sauce before serving. If needed, warm the sauce in a small saucepan to take the chill off of it.