Prepare the Marinade:

In a small bowl, combine the maple syrup, soy sauce, sriracha hot sauce, and smashed garlic. Pour the marinade into a gallon-sized resealable bag and add the salmon fillets. Marinate for 20 to 30 minutes, turning the bag occasionally to ensure even coating.

Preheat the Air Fryer:

Lightly spray the basket of the air fryer with oil to prevent sticking.

Pat Dry the Salmon:

Remove the salmon fillets from the marinade, reserving the marinade. Pat the fillets dry with paper towels to remove excess moisture.

Air Fry the Salmon:

Place the salmon fillets in the air fryer basket in batches, making sure they are not overcrowded. Air fry at 400°F for 7 to 8 minutes, or longer depending on the thickness of the salmon. The salmon is done when it is opaque and flakes easily with a fork.

Make the Glaze:

While the salmon is cooking, pour the reserved marinade into a small saucepan. Bring the marinade to a simmer over medium-low heat and reduce until it thickens into a glaze, about 1 to 2 minutes.

Serve:

Once the salmon is cooked, remove it from the air fryer and transfer it to serving plates. Spoon the thickened glaze over the salmon fillets just before serving.