Baking Soda: The Classic That Disappoints
Everyone’s heard the old wives’ tale about keeping an open box of baking soda in your fridge to absorb odors. The answer is both yes and no. Baking soda can absorb some odors, particularly acidic ones, but its effectiveness depends on several factors. The problem? Simply placing a closed box of baking soda in the fridge will not suffice. Instead, pour the baking soda into a shallow dish to increase its surface area.
Although baking soda is a simple and reliable odor neutralizer, it’s important to remember that it’s best for mild to moderate smells. Baking soda will struggle to absorb the smell of particularly pungent foods. What makes this worse is that once baking soda gets saturated with moisture and odors, it becomes a breeding ground for the very bacteria it was supposed to combat.
Onions: The Stinky Saboteurs
Onions (large bulb types) and garlic. Aromas from bulb onions affect apples, celery, potatoes and pears. Even worse, While onions are still in their peeling the odor is almost nonexistent, but from the time you cut into an onion until the time you finish consuming it or dispose of it, the strong, overpowering scent lingers. Even a well-sealed plastic bag may not be enough to prevent onion smells from permeating your refrigerator.
Both garlic and onions belong to the Allium genus and contain sulfur compounds, primarily allicin and alliin. When these ingredients are chopped, crushed, or cooked, enzymatic reactions convert alliin into allicin, which is responsible for the characteristic odor. The volatile sulfur compounds don’t just stay put—they travel through your fridge like unwelcome houseguests, contaminating everything they touch.
Fish and Seafood: The Ultimate Odor Destroyers
The fish odor in your refrigerator primarily comes from the decomposition of fish proteins and oils. When fish is stored, its proteins can break down and release amines, which have a strong, pungent smell. Additionally, if any fish or seafood is not properly wrapped or sealed, the odor can permeate the surrounding areas and contaminate other foods, leading to an overall unpleasant scent.
The primary culprit is trimethylamine, a chemical compound produced when fish begins to decompose. Even fresh fish can emit this compound, causing an unpleasant smell when stored in closed environments. Yes, the unpleasant fish odor can transfer to other food items stored in the fridge, making your milk taste fishy and your vegetables smell like low tide.
Dairy Products: Silent Smell Spreaders
Dairy products, some vegetables, and even certain meats can give off fishy odors as they go bad. But here’s what’s particularly sneaky about dairy: it absorbs odors from other foods while simultaneously releasing its own unpleasant smells as it spoils. In specific cases, such as dairy or produce, absorption of fish odor can lead to spoilage or rancidity, making them less appealing or safe to eat.
Milk, cheese, and yogurt act like sponges for surrounding odors. That leftover container of sour cream sitting next to your takeout fish? It’s now a ticking time bomb of combined flavors that will make your morning coffee taste like a seafood restaurant.
Apples: The Sweet Saboteurs
Apples. Apple odor is absorbed by cabbage, carrots, figs, onions, meat, eggs and dairy products. “Many consumers store apples in the refrigerator to keep them crisp, but in that space their odor may cause problems,” Brown says. What’s surprising is that apples don’t just absorb odors—they actively emit their own that can contaminate other foods.
Those innocent-looking apples in your crisper drawer are working overtime to ruin your vegetables. They release ethylene gas, which not only makes other produce ripen faster but also creates a chemical cocktail that affects flavor profiles throughout your refrigerator.
Carrots: The Earthy Contaminators
Carrots. Celery can absorb the odor of carrots. “It gives celery sort of an earthy taste,” Ferretti says. While carrots might seem harmless, they’re actually powerful odor absorbers and emitters. When stored improperly, they can develop a musty, soil-like smell that permeates nearby vegetables.
The problem intensifies when carrots start to go bad. They develop a particularly unpleasant sweet-sour odor that sticks to everything in the produce drawer. Before you know it, your lettuce tastes like dirt and your bell peppers have an earthy aftertaste.
Potatoes: The Underground Troublemakers
Potatoes. Aromas from potatoes affect apples and pears. “Potatoes are almost always stored separately from other produce, so odor usually isn’t a big problem,” Ferretti says. But when potatoes do make it into your fridge, they become problematic odor absorbers and producers.
Potatoes stored in the refrigerator develop a sweet, starchy smell that might seem pleasant at first but quickly becomes cloying and overwhelming. They also absorb moisture and odors from other foods, creating a feedback loop of contamination that affects everything in your vegetable drawer.
Pears: The Fragrant Felons
Pears. Pear odor is absorbed by cabbage, carrots, celery, onions and potatoes. Pears are particularly troublesome because they emit a sweet, floral scent that seems pleasant but actually acts as a carrier for other odors. When pears start to overripen, they become incredibly potent odor absorbers.
The natural sugars in pears ferment as they age, creating alcohol-like compounds that mix with absorbed odors from nearby foods. This creates a complex bouquet of smells that can make your entire produce section taste like a failed science experiment.
Bread: The Sponge of Doom
Bread is one of the most underestimated odor absorbers in your refrigerator. Its porous structure makes it incredibly effective at soaking up moisture and odors from surrounding foods. It also helps to rotate items like desserts, which absorb odors quickly, and bread falls into this category of quick absorbers.
Once bread absorbs odors, it becomes a concentrated source of contamination. That loaf sitting next to your leftover curry doesn’t just smell like spices—it tastes like them too. The yeast in bread continues to work even in cold temperatures, fermenting absorbed compounds and creating new, unpleasant flavors that affect everything it touches.
Your refrigerator isn’t just a cold storage box—it’s a complex ecosystem where odors travel, combine, and contaminate everything they encounter. These twelve foods prove that the old saying about keeping things separate isn’t just good advice, it’s essential for maintaining food quality. Next time you catch a whiff of something funky in your fridge, remember that the innocent-looking apple or that helpful box of baking soda might be the real culprits behind your contaminated leftovers.
