August 4, 2026, 3:56 am | Read time: 3 minutes
If you open the fridge and are greeted by unpleasant odors, you’re likely searching for a quick fix. A simple trick often circulates online: A raw potato is said to absorb and neutralize bad smells in the fridge. But does it really work?
Why a Potato Can Theoretically Absorb Odors
There is actually a scientifically plausible basis behind the potato trick. “The water in the potato dissolves water-soluble odor components,” explains Elke Messerschmidt from the Competence Center for Home Economics. However, it’s important to use only a raw potato.
Its structure also plays a role: “The potato has a porous structure that allows volatile odor aromas to penetrate and then dissolve in water.” Under certain conditions, it can indeed absorb some of the odor molecules. To enhance the effect, you could slice or wedge the potatoes to increase the surface area.
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In Practice, the Disadvantages Outweigh the Benefits
As plausible as the theory sounds, the expert still does not recommend the potato trick. One reason is sustainability. Potatoes are food items that require a lot of water and other resources to grow. Additionally, they would need to be replaced regularly to be effective. Especially with stronger-smelling fridges, it’s unclear how many potatoes would be needed.
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Another downside is that cut potatoes are perishable. “A natural product spoils when cut. This means I am also introducing decay-causing bacteria into the fridge,” says Messerschmidt. Instead of eliminating odors long-term, this could even create a new hygiene problem.
Better to Prevent Odors from Forming in the First Place
According to the expert, it’s much more sensible to prevent unpleasant odors from the start. Strong-smelling foods like cheese should always be stored in airtight containers. Leftovers should also be well-covered or placed in tightly sealed containers.
Regularly checking your supplies is equally important. Spoiled food should be disposed of immediately before it develops odors or affects other foods. Paper packaging has no place in the fridge, as it absorbs moisture, becomes soggy, and can develop unpleasant smells.
Cleaning also plays a crucial role. Depending on use and dirt, Messerschmidt recommends thoroughly cleaning the fridge about once a month to once a quarter: “A solution of water and dish soap is sufficient, and you can additionally wipe down the fridge with a bit of citric acid.”