Quick answer: White smoke from an air fryer is usually fat or old grease heating up—rendered fat pooled under the crisper plate, residue from a previous cook, marinade splatter or too much oil. Manufacturers call some white smoke or steam normal. Dark or black smoke is different: Cosori and Ninja both say to unplug immediately and wait for the smoke to clear before pulling the basket out, because it means food is burning or there may be an electrical fault.
Below: what the Cosori, Ninja and Philips manuals say, a smoke diagnosis table and the fixes that stop it next time.
A little visible water vapor from moist or frozen food is different from smoke with a sharp burnt odor. Smoke that increases, turns dark, comes from the controls or continues after food is removed deserves immediate attention.
Do not disable a smoke alarm or move a smoking, energized appliance through the kitchen. Control the source first and clean only after the unit is unplugged and completely cool.
Thin white vapor
Often moisture from frozen or wet food, or the first use of a new unit; confirm it fades and has no burnt smell.
White or gray greasy smoke
Fat dripping under the crisper plate, splatter or old grease is reheating. Drain, clean and reduce oil.
Dark or black smoke
Food, breading, paper or residue is burning—or a circuit problem. Unplug now and wait for it to clear.
Smoke or odor from the body, controls or plug
Possible wiring, motor or melting-material fault. Unplug, do not retry and contact the manufacturer.
What the manuals say about white and dark smoke
These are the smoke instructions printed in US owner’s manuals and on Philips’ US support site. Wording is quoted or closely paraphrased; this is a manual-led explainer, and we have not run smoke tests on these units.
| Source | White smoke | Dark or black smoke | Prevention the manufacturer gives |
|---|---|---|---|
| Cosori Pro LE CAF-L501-KUS (5 qt) manual Pro LE vs Lite |
“May produce some white smoke or steam when you use it for the first time or during cooking. This is normal.” Greasy foods make oil collect beneath the crisper plate, which “will produce white smoke” | “Immediately unplug your air fryer. Dark smoke means that food is burning or there is a circuit problem.” Wait for smoke to clear before pulling the basket out; if the cause was not burnt food, contact Customer Support | Keep the basket and inside clean and not greasy; pour out fat drippings after cooking; pat liquid-marinated foods dry; use no more than 2 US tbsp / 30 mL of oil; never fill the basket with oil or fat |
| Cosori Premium II Plus CAF-P652-KUS (6.5 qt) manual | Same wording: some white smoke or steam is normal; “White smoke is normal, caused by heating fat or food splashing” | Turn off and unplug immediately if you see dark smoke; wait for it to clear before removing the basket | Drain collected fat before replacing the basket; never put parchment or baking paper in without food on top, because circulating air can lift it onto the heating coils |
| Ninja Air Fryer AF100 series (incl. AF101, 4 qt) owner’s guide AF101 review |
No white-smoke entry in the guide | “Should the unit emit black smoke, unplug immediately and wait for smoking to stop before removing the cooking basket.” | Clean the unit thoroughly after every use; clean the heating element with a cleaning brush to remove food residue; do not use it for deep-frying with oil |
| Philips Airfryer (US support article) | Causes listed: high-fat food; the fat reducer not in the pan with fatty ingredients; greasy residue in the pan from previous use; breading that did not adhere; light ingredients sucked into the heating element | Not covered in this article | The article lists causes only. Our reading of them: use the fat reducer where your model has one, clean the pan between cooks, make breading adhere and keep light food from lifting |
What the manufacturers agree on:
- Some white smoke is expected; dark smoke is not. Cosori calls white smoke or steam normal on first use and with fatty food, but treats dark smoke as a reason to unplug and contact support if burnt food was not the cause.
- Do not pull the basket out into smoke. Cosori and Ninja both say to wait until the smoke stops or clears before removing the basket.
- Most white smoke is fat you can remove. Fat that drips below the crisper plate keeps heating. Pouring it out between batches, patting marinated food dry and limiting oil (Cosori: 2 tbsp maximum) address the usual cause.
- Light material near the heater burns. Paper without food on top and loose crumbs or breading can reach the coil. Philips lists light ingredients being sucked into the heating element as a smoke cause.
What to do when an air fryer starts smoking
- Dark smoke: unplug immediately. Use the plug or breaker without reaching through smoke or touching a hot, damaged cord. Light white smoke on a fatty cook can be stopped by pausing the program.
- Keep the basket in until the smoke clears. Cosori and Ninja both say to wait. If flames are visible, keeping the chamber closed limits oxygen. Never pour water into an energized appliance or onto a grease fire.
- Ventilate after the immediate hazard is controlled. Open a window or use the range hood. Do not silence the alarm and keep cooking.
- Let the appliance cool. Hot grease and the heating element can reignite residue. Do not reach inside or carry the unit while hot.
- Find the source. Look for fat pooled under the crisper plate, burnt crumbs or breading, a lifted liner or paper, sauce near the roof or food touching the heater.
- Clean the basket, crisper plate and accessible chamber. Unplugged and cool. Ninja says to clean the heating element with a cleaning brush; Cosori says to remove debris from the coil and let it dry completely.
- Change the cook. Drain fat between batches, pat marinated food dry, use less oil, trim loose fat, cook smaller batches and keep paper weighed down by food.
- Run one small supervised test if no fault signs remain. Use a clean appliance and low-mess food. If dark smoke returns without burnt food, stop and contact the manufacturer.
- Check recalls. Search the full model number with the CPSC and manufacturer, particularly if smoke came from the base, controls, plug or fan rather than the cooking chamber.
Air fryer smoke diagnosis
Color alone is not perfect; combine it with odor, location and what is cooking.
| Smoke or vapor | Likely source | Response |
|---|---|---|
| Light steam that fades | Moist or frozen food releasing water, or a new unit’s first use | Monitor and confirm there is no burnt odor. |
| White-gray smoke with bacon, wings or sausages | Rendered fat pooled under the crisper plate | Pause, pour out the drippings and continue at a lower temperature if the recipe allows. |
| White smoke on the first minutes of every cook | Old grease on the basket, chamber roof or heater | Unplug, cool and clean the interior and heating element as the manual permits. |
| Smoke with marinated or sauced food | Liquid splatter reaching hot surfaces | Pat food dry; add sauce near the end. |
| Dark smoke from chamber | Burning crumbs, breading, sauce or paper | Unplug now; wait for it to clear before opening. |
| Smoke from controls, base or cord | Electrical or material fault | Disconnect safely, do not reuse, contact the manufacturer. |
| Smoke only with one accessory or liner | Liner, pan or paper interfering with heat or grease flow | Remove the accessory and verify it is approved for your model. |
Why fatty food makes an air fryer smoke
Bacon, sausages, wings and fatty ground meat release fat that drips through the crisper plate. Cosori’s manual says this oil “will produce white smoke, and the basket may be hotter than usual”, and tells owners to pour out fat drippings to avoid excess smoke. Cook a smaller portion, drain between batches, trim loose fat and lower the temperature when the recipe permits. Philips models with a fat reducer should have it in the pan for fatty ingredients. Do not add water under the basket unless your exact manual instructs that method.
Why a clean basket can still produce smoke
Grease may be carbonized on the chamber roof, heater guard or fan area. When a new cook gets hot, old residue smokes again—Philips lists greasy residue from previous use as a white-smoke cause. With the appliance cold and unplugged, inspect the accessible interior; Ninja’s guide allows a cleaning brush on the heating element. Do not spray cleaner upward or bend the coil. Our heating-element cleaning guide and maintenance checklist cover the routine.
Is smoke from a new air fryer normal?
Cosori’s manuals say some white smoke or steam on first use is normal and recommend a test run to clear the manufacturing smell. Wash the basket and crisper plate before first use (Ninja’s guide says the same). A light odor that fades over the first cooks is expected; dark smoke, melting plastic or smoke from the body is not. See plastic or burning smell for that case.
Air fryer sets off the smoke alarm but looks clean
Very fine oil aerosol can trigger an alarm before smoke looks dense. Check oil quantity, food fat, marinade and exhaust direction—the air outlet is usually at the back, so keep it clear of walls and cabinets. The correct solution is source control and ventilation, not covering, relocating or disabling a working alarm. Persistent unexplained smoke can also indicate an internal fault.
Stop and unplug: Treat flames, dark or black smoke, blue smoke, sparks, melting, electrical odor or smoke from the controls, base, plug or cord as a serious fault. Keep a fire contained by leaving the chamber closed, cut power only when safe, evacuate and call emergency services if it does not go out.
Prevent smoke on the next cook
- Basket, crisper plate and accessible heater area clean and not greasy
- Fat drippings poured out between fatty batches
- Marinated food patted dry; sauces added near the end
- Oil kept light (Cosori: no more than 2 tbsp)
- No parchment or paper without food weighing it down
- Breading pressed on firmly; light food weighed down
- Food below the maximum line
- Air outlet clear and normal ventilation running
Related guides
- Cleaning the Inside and Heating Element
- Air Fryer Maintenance and Monthly Checklist
- Air Fryer Parts Explained (crisper plate, heater, air outlet)
- Plastic or Burning Smell
- Safe Containers, Liners and Utensils
- Cleaning Hacks: What Not to Do
- Are Air Fryers Safe?
Sources and method
Clara Bennett updated this guide on October 29, 2026. Smoke instructions are quoted or closely paraphrased from the manufacturer documents below, accessed October 29, 2026. This is a manual-led explainer, not a hands-on smoke test.
- Cosori Pro LE 5.0-Quart Air Fryer CAF-L501-KUS user manual (US): Safeguards p. 5, Food Tips p. 13, Troubleshooting p. 15
- Cosori Premium II Plus 6.5-Quart Air Fryer CAF-P652-KUS user manual (US): Safeguards p. 5, Troubleshooting pp. 19–20
- Ninja Air Fryer AF100 series owner’s guide (US): Important Safeguards, Cleaning & Maintenance
- Philips US support: White smoke comes out of my Philips Airfryer
- NFPA: Cooking Fire Safety
- U.S. Consumer Product Safety Commission: Product Recalls
Always follow the use-and-care manual for your exact model; controls, removable parts, clearances and error codes are not standardized.
Frequently asked questions
Why is white smoke coming out of my air fryer?
Usually fat: drippings pooled under the crisper plate, old grease on the basket or chamber, marinade splatter or too much oil. Cosori’s manuals call some white smoke or steam normal, especially on first use. Pour out drippings, clean the interior and pat food dry. Stop if it smells burnt or keeps increasing.
What does black smoke from an air fryer mean?
Food, breading or paper is burning, or there is a circuit problem. Cosori and Ninja both say to unplug immediately and wait for the smoke to clear before removing the basket. If burnt food was not the cause, contact the manufacturer before using it again.
Why does my air fryer smoke when cooking bacon or chicken wings?
High-fat food drips fat below the crisper plate, where it keeps heating and smokes. Cook smaller batches, pour out the drippings between batches and lower the temperature if the recipe allows. On Philips models, use the fat reducer if yours has one.
Is it normal for a new air fryer to smoke?
A little white smoke or steam and a manufacturing smell on the first cooks is normal according to Cosori, which recommends a test run first. Dark smoke, melting plastic or smoke from the body or plug is not normal.
Can I put water under the air fryer basket to stop smoke?
Only if your exact model manual recommends it. Cosori’s manuals say not to fill the basket with oil, fat or any liquid. Water in the wrong place can splash or create steam and electrical risk.
Why does my air fryer smoke even after cleaning?
Residue may remain on the chamber roof or heating element, an accessory may redirect grease, or light food or paper may be reaching the heater. Stop for any smoke from outside the cooking chamber.
What should I do if an air fryer catches fire?
Keep the chamber closed, cut power only if safe, never throw water on an energized or grease fire, evacuate if it does not go out and call emergency services.
About the Author
Clara Bennett
I write practical, model-specific air fryer reviews and comparisons. I focus on usable capacity, household fit, cleaning, materials, day-to-day ownership and value so you can choose the right appliance with fewer surprises.
Read my full profile and review method
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