While many traditional favorite toppings like ketchup, mustard, and onions can be added on top without issue , extra wet sauces like chili and cheese would likely cause smoke and splattering when cooked using an air fryer so this type of Hot Dogs may not be feasible using this method . Instead try baking them in a classic oven setup where these sorts of toppings are easier and safer to use without worry about fire hazards due too excess grease dripping onto heating elements.