Yeah, this one's common. White smoke is usually normal steam or from grease heating up, not a fire hazard. Dark smoke is the problem.
FIX: First, unplug and let it cool. Then, clean the basket and the inside of the air fryer thoroughly. Cooking greasy foods causes oil to collect under the crisper plate; that oil produces white smoke. Clean that area.
IF THAT DIDN'T WORK: If you just got it, a plastic smell and some initial smoke is normal from manufacturing residues. Do a Test Run: preheat empty at 400°F for 4 minutes, then run the Steak function at 450°F for 5 minutes. Let it cool completely and clean it afterward.
HEADS UP: Dark smoke means food is burning or there's a circuit problem. If you see dark smoke, unplug immediately, wait for it to clear, and pull the basket. If the food isn't burnt, contact support.