How to Clean Air Fryer After Cooking Fish

Why Fish Is the Hardest Air Fryer Smell to Remove

Fish contains trimethylamine (TMA) — the compound responsible for that distinctive fishy smell. When fish is cooked in an air fryer, TMA and fish oils are aerosolized by the circulating hot air and deposited on every interior surface: the basket, drawer, walls, and heating coil. These compounds are particularly stubborn because they bond to surfaces and continue releasing odor as they oxidize. Without a thorough clean immediately after cooking, the fish smell can linger for days and transfer to everything you cook next.

The Golden Rule: Clean Immediately

The single most important thing you can do is clean the air fryer immediately after it cools from cooking fish. Fish oils and TMA compounds are dramatically easier to remove when fresh. Leaving them to sit and oxidize makes the smell significantly worse and harder to eliminate.

What You'll Need

• Dish soap and hot water
• White vinegar
• Lemon (fresh)
• Baking soda
• Soft sponge
• Microfiber cloths

Fresh lemon is your most powerful weapon against fish smell — citric acid neutralizes TMA compounds chemically. White vinegar provides additional odor neutralization. Baking soda absorbs residual odor molecules from surfaces and air. A squirt of dish soap removes the fish oils that carry the smell.

Step-by-Step: How to Clean an Air Fryer After Cooking Fish

Step 1: Cool Down and Disassemble

Allow the air fryer to cool for 20–30 minutes. Remove the basket and drawer.

Step 2: Wash with Lemon Dish Soap

Fill the basket and drawer with hot water. Add a generous squirt of dish soap and the juice of half a lemon. Let soak for 20–30 minutes. The dish soap removes fish oils while the lemon juice neutralizes TMA odor compounds. Scrub with a soft sponge, rinse thoroughly, and dry.

Step 3: Wipe the Interior with Vinegar

Dampen a microfiber cloth with undiluted white vinegar and wipe down the interior walls of the air fryer body. The acetic acid in vinegar neutralizes TMA compounds on contact. Wipe again with a clean damp cloth to remove vinegar residue, then dry.

Step 4: Lemon Steam Treatment

Cut a lemon in half and place it in the clean basket with 1–2 tablespoons of water. Run the air fryer at 350°F (175°C) for 3–5 minutes. The lemon steam fills the interior and neutralizes any remaining fish odor compounds on the walls and heating coil. Allow to cool and wipe clean.

Step 5: Baking Soda Overnight (If Smell Persists)

If any fish smell remains after the lemon steam treatment, place an open bowl of baking soda inside the closed air fryer overnight. Baking soda absorbs residual odor molecules from the air and surfaces inside the appliance. Remove in the morning and run empty for 2 minutes before cooking.

Step 6: Clean the Heating Coil

Fish oils reach the heating coil during air frying and are a major source of lingering smell. Turn the air fryer upside down and gently brush the coil with a soft brush. Wipe with a barely damp cloth. Allow to dry completely.

How to Prevent Fish Smell from Spreading

• Use parchment paper liners when cooking fish — they contain fish oils and juices in the basket, significantly reducing how much reaches the walls and coil.
• Cook fish at a slightly lower temperature to reduce oil aerosolization.
• Run the range hood fan during and after cooking fish in the air fryer.
• Open windows to ventilate the kitchen immediately after cooking.

Removing Fish Smell from the Air Fryer Exterior

Wipe the exterior with a cloth dampened with white vinegar, then follow with a damp soapy cloth and dry. Pay attention to the drawer slot area where fish odors concentrate.

Final Thoughts

Fish smell in an air fryer is stubborn but very manageable with the right approach. Clean immediately after cooking, use lemon dish soap for the basket, vinegar for the interior walls, and lemon steam for the final deodorizing treatment. With parchment liners going forward, the fish smell problem is largely solved before it starts.