Cut tiny slits (about ⅛-inch thick)into eachhot dog.Thisstep is optional but allows the edges to get extra crispy and holds the toppings better.
Place the crisper plate into the COSORI Smart Air Fryer basket, then place the hot dogs onto the crisper plate.
Select the Air Fry function, adjust temperature to 400°F and time to 6 minutes, then press Start/Pause.
Remove the hot dogs and transfer them into the buns, then place the assembled hot dogs back onto the crisper plate.
Select the Air Fry function, adjust temperature to 400°F and time to 2 minutes, then press Start/Pause.
Squeeze mustard onto each hot dog, then spoon about 1 teaspoon sweet relish on top. Nestle the tomato strips into each bun, then sprinkle with chopped onion.
Add 1 pickle spear to each hot dog, wedging it between the dog and the bun, then add 2 sport peppers and sprinkle with celery salt before serving.