White smoke from fatty food is usually normal. Black smoke means unplug it immediately.
Requirement — Appliance and electrical safety
White smoke from fatty food is usually normal. Black smoke means unplug it immediately.
How to tell, without a thermometer
- White or grey smoke with a cooking smell, from fatty food or a dirty drawer — normal, and a signal to clean and cook cooler
- Black smoke, or any smell of hot plastic or electrical burning — not normal, and not a cooking problem
If it has not got there: For white smoke: stop, let it cool, clean the fat out of the drawer and from under the basket, and cook 10–20°C lower. For black smoke: unplug at the socket, leave the drawer closed until the smoking stops, and do not use the appliance again until the manufacturer has advised you.
Important: Any smell of burning plastic or of electrical burning is an appliance fault rather than a cooking event. Switch off at the socket, stop using the appliance, and contact the manufacturer.
Why this is the rule
Two different things are called smoke and they need opposite responses. Fat dripping onto a hot surface produces a white or grey smoke with a cooking smell, and it is what one manufacturer describes as normal when cooking high-fat food such as pork — the remedy is a lower temperature and a cleaner drawer. Black smoke is not that. One manufacturer's safeguards single it out: if the unit emits black smoke, unplug immediately and wait for the smoking to stop before removing any cooking accessories. The instruction to wait matters as much as the instruction to unplug, because opening a smoking chamber feeds it air.
This outranks any cooking time on this site. Where a cooking recommendation cannot be reconciled with a rule like this one, AirfryerHQ does not publish the recommendation — not with a warning attached, not greyed out, not at all.
Evidence and confidence
- Applies to
- Specific to this type of appliance
- Why this rating
- The distinction between the two kinds of smoke is drawn directly by two manufacturers, one describing the benign case and the other the dangerous one, with the electrical-safety body supplying the escalation. The distinction itself — that these are different events needing different responses — is AirfryerHQ's synthesis of three sources that each describe only one side of it.
- Last reviewed
- 2026-08-13
What this does not cover
- No source read states the white-versus-black distinction as a single rule. It is assembled from three that each address part of it, and the record says so.
Sources (3)
Ninja Foodi MAX Dual Zone Air Fryer AF400UK — Instructions (PDF)
SharkNinja Europe Limited — Manufacturer manual (United Kingdom)
Relied on for: That black smoke requires unplugging immediately and waiting for the smoking to stop before removing accessories.
States this directly
Passage read and verified
Retrieved 2026-08-13 from argos-support.co.uk
Retrieved from Argos's manual library, which mirrors the manufacturer's booklet for Argos product 952/3997. Not retrieved from ninjakitchen.co.uk, whose support portal redirected to an authentication gate.
Russell Hobbs SatisFry Air Fryer & Grill Multi Cooker 5.5L — Instructions (PDF)
Spectrum Brands (Russell Hobbs) — Manufacturer manual (United Kingdom)
Relied on for: That high-fat foods may create smoke, that this is normal as oil residue is cooked at high temperature, and that reducing the temperature may reduce it.
States this directly
Passage read and verified
Retrieved 2026-08-13 from argos-support.co.uk
Retrieved from Argos's manual library for Argos product 206/6444.
Electrical safety advice for air fryers
Electrical Safety First — Electrical-safety authority or body (United Kingdom)
Relied on for: That an unusual smell or noise means switching off immediately and contacting the manufacturer.
States this directly
Passage read and verified
Retrieved 2026-08-13 from electricalsafetyfirst.org.uk