Why does my air fryer smoke when cooking bacon or burgers?

Because rendered fat drips into the drawer, pools on a surface running at 350 to 400 degrees Fahrenheit, and passes its smoke point. Bacon fat starts smoking around 375 degrees and beef tallow around 400, so a drawer at cooking temperature is hot enough to burn both. The standard fix is two to three tablespoons of water in the bottom drawer beneath the basket, which keeps the pooled fat below its smoke point without affecting the food.

Is white smoke from an air fryer dangerous?

Thin white smoke from fat or steam is a nuisance rather than a hazard, and it clears once the source is removed. Dark or acrid smoke, or a smell of burning plastic or electrical insulation, is different — unplug the unit immediately and inspect it cold. Blue-gray smoke from an empty appliance usually means residue on the heating element. Any smoke accompanied by a burning-plastic odor, a hot plug, or scorching near the cord should retire the appliance.

Why does a brand new air fryer smoke?

Manufacturing residue burning off. Protective oils and coatings from the factory vaporize on the first few heat cycles, producing a plastic or chemical odor and sometimes light smoke. Most manuals instruct owners to run the empty unit at maximum temperature for 10 to 20 minutes in a ventilated room before first use. If the smell persists past three or four cooks, something else is going on — check for packaging material left inside the drawer or around the element.

How do you stop an air fryer smoking with high-fat food?

Add water to the drawer, cook in smaller batches, and drain rendered fat mid-cook. Two to three tablespoons of water in the drawer under the basket keeps fat below its smoke point, and it does not interfere with crisping because it sits below the perforated basket. For bacon, wings and burgers, pause halfway, pour off the collected fat carefully, and continue. Overfilling the basket makes it worse, because food sits in its own drippings instead of draining.

Can foil or parchment cause an air fryer to smoke?

Yes, in two ways. Foil that blocks the basket perforations traps grease on the food surface instead of letting it drain, so the fat sits directly under the food and burns. And a loose sheet of either can be lifted by the fan into the heating element, where it scorches immediately. Any liner belongs inside the basket, weighed down by food, with the perforations clear — and never in an empty basket during preheat.

Why Does My Air Fryer Smoke?

Written & researched by Derek Holt Home & Appliances Editor

Updated October 2026

Three-quarter view of a person's hands lifting food from a countertop appliance in a bright kitchen, in bright midday sun

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An air fryer smokes for one of two reasons: fresh fat dripping into a hot drawer and passing its smoke point, or old residue baked onto the heating element and interior. Tell them apart by running the unit empty for five minutes. If it smokes empty, the problem is accumulated residue and the fix is cleaning, including the element and the interior ceiling. If it only smokes with food, the fat is the source — add two to three tablespoons of water to the drawer beneath the basket and cook in smaller batches.

Why does high-fat food make it smoke?

Because the drawer beneath the basket is running at cooking temperature and rendered fat pools there. Every fat has a smoke point, and most animal fats sit below the temperature an air fryer runs at.

Fat or oil	Approximate smoke point	Smokes at 400°F?
Butter	~300–350°F	Yes, badly
Extra virgin olive oil	~350–375°F	Yes
Bacon fat	~375°F	Yes
Beef tallow	~400°F	Borderline
Canola oil	~400°F	Borderline
Refined peanut oil	~450°F	No
Avocado oil	~500°F	No

The practical implication is that bacon, sausage, wings, burgers and marbled steak will smoke in an air fryer unless the fat is managed, and that spraying extra virgin olive oil onto food headed for a 400 degree cook is asking for smoke before the food even renders anything.

Wide environmental view of a person's hands lifting food from a countertop appliance in a bright kitchen, in bright midday sun

Does putting water in the drawer actually work?

Yes, and it is the most effective single fix. Two to three tablespoons of water in the bottom drawer, beneath the perforated basket, keeps any fat that collects there at or near the boiling point of water rather than letting it climb past its smoke point. It does not steam the food, because the water sits below the basket and the volume is tiny relative to the airflow. It also makes cleanup considerably easier, since the fat never bakes onto the drawer.

Two things to avoid. Do not fill the drawer — a few tablespoons is the whole idea, and more will slosh and interfere. And do not use foil to line the drawer as an alternative, which traps grease against the hot surface and blocks the airflow path the appliance depends on.

Wide view of a person's hands lifting food from a countertop appliance in a bright kitchen, in warm late-afternoon light

How do you tell if it is old residue?

Run the empty appliance at 400 degrees for five minutes with the basket in. Smoke from an empty unit means carbonized grease somewhere in the chamber, and almost always on the ceiling or the heating element itself, which is the part owners overlook because it is out of sight above the basket.

To clean it, unplug the unit and let it cool completely, then tip it on its back or side so the element faces up. Wipe the element and the interior ceiling with a damp cloth and a little dish soap, using a soft brush on stubborn spots, and dry thoroughly before plugging back in. Never spray cleaner directly into the chamber and never immerse any part of the housing. Doing this every month or two prevents nearly all residue smoking, and it also removes the layer that forces the element to run hotter than it should.

Over-the-shoulder view of a person's hands lifting food from a countertop appliance in a bright kitchen, in bright midday sun

What are the less obvious causes?

Overfilling the basket. Food packed in cannot drain, so it sits in its own fat. Cook in two batches rather than one crowded one.
Loose lightweight food. A stray piece of parchment, a leaf of kale or a slice of bread can be lifted by the fan into the element and scorch instantly.
Liners blocking the perforations. Foil across the basket floor traps grease under the food instead of letting it fall through.
Sugary marinades and glazes. Sugar carbonizes well below fat smoke points and welds to the basket, producing acrid smoke.
A brand new appliance. Factory coatings burn off over the first few cycles; most manuals recommend running the empty unit hot for 10 to 20 minutes before first use.

One case is not a cooking problem at all. If the smoke is dark, smells of burning plastic or electrical insulation, or is accompanied by a hot plug or scorching at the cord entry, unplug the appliance and stop using it. Cooking equipment is consistently reported by the National Fire Protection Association as the leading cause of home structure fires, and an electrical smell is the point at which an appliance stops being worth troubleshooting.

Where to go next

Cleaning solves most smoking, so start with how to clean an air fryer and check whether the basket is dishwasher-safe. Liner misuse is a common trigger — foil in an air fryer explains where it can and cannot go. See also what you cannot cook in an air fryer and how long air fryers last. Replacing yours? The best air fryers ranks models on aggregated owner ratings, inside the small kitchen appliances hub.

We never buy or physically handle the products we rank — our picks come from aggregated owner reviews and expert consensus, explained on how we rank.