The air fryer could start emitting unwanted odor which could also affect the smell of your food.
Learn a trick or two in this video tutorial byFabulessly Frugalon YouTube.
Give the exterior a quick wipe as well.

Image Credit: Fabulessly Frugal via YouTube
Repeat this method until the smell goes away completely.
Grab an old toothbrush and start applying the homemade solution and scrub it well.
Let it sit for a few minutes while youre rinsing the basket.

*All these images are credited toFabulessly Frugalvia YouTube.
How To Clean A Dirty & Smelly Air Fryer
