What Tastes Better Than It Smells: The Science

Dozens of foods taste far better than they smell, and most of them share a common trait: fermentation. The bacterial and chemical processes that create deeply savory, complex flavors also release pungent volatile compounds that hit your nose hard before the food ever reaches your mouth. Cheese, fermented fish, fermented soybeans, and stinky tofu are among the most famous examples, but the list is longer than you might expect.

Why Smell and Taste Can Tell Different Stories

Your brain actually processes smell in two distinct ways depending on how the odor reaches you. Sniffing something before you eat it sends air through the front of your nose, which is called orthonasal olfaction. Once food is in your mouth, chewing and swallowing push volatile compounds up through the back of your throat to your nasal cavity, a process called retronasal olfaction. These two routes are processed differently at a neurological level, meaning the same compound can register as unpleasant when sniffed but perfectly fine, or even enjoyable, when tasted.

On top of that, your brain merges taste and smell into a single experience called flavor. A region of the brain called the insular cortex responds to both taste signals from your tongue and odor signals from your nose simultaneously. Over time, your brain learns to associate certain smells with the tastes they accompany. Food odors activate taste-related brain areas in ways that non-food odors don’t, suggesting this connection develops specifically through eating experience. So a cheese that smells terrible on the plate can taste rich and mild in your mouth because your brain is integrating the salt, fat, and umami from your tongue with a very different retronasal smell profile.

Cheese: The Classic Example

Limburger is probably the most cited food that tastes better than it smells. Its rind is colonized by a bacterium called Brevibacterium linens, the same species that lives on human skin and contributes to foot odor. As the bacteria break down proteins on the cheese’s surface, they release a cocktail of sulfur compounds and short-chain fatty acids that produce the famously aggressive smell. But the interior paste is mild, buttery, and slightly tangy. The volatile compounds responsible for the stench dissipate quickly in your mouth, leaving behind the creamy fats and savory amino acids your tongue actually registers.

Époisses, Munster, Taleggio, and Brick cheese all use similar surface-ripening processes. The pattern is consistent: the smear of bacteria on the outside generates the offensive aroma, while the interior delivers a flavor that ranges from nutty to meaty to gently sweet. Many people who can’t stand the smell of these cheeses are surprised by how pleasant they taste.

Fermented Fish

Surströmming, the Swedish fermented herring, is often called one of the worst-smelling foods on Earth. The fermentation produces hydrogen sulfide (the rotten-egg gas), along with butyric acid and propionic acid. Autolytic enzymes in the fish flesh and gut break proteins down into free amino acids during months of fermentation, and the bacteria produce organic acids like lactate and acetate. The gas builds up so intensely that cans visibly bulge on the shelf.

The taste, though, is salty, acidic, and deeply umami. Traditionally eaten on flatbread with butter, potatoes, and onions, the actual flavor in your mouth is more like an intensely savory anchovy than anything the smell would suggest. The volatile gases that make it so offensive are exactly that: volatile. They escape into the air before eating and dissipate once the fish is in your mouth, leaving behind the amino acid richness on your tongue.

Fish sauce and shrimp paste follow the same principle on a milder scale. A spoonful of fish sauce smells strong and funky, but it adds a rounded, salty depth to dishes that most people find appealing without even identifying what it is.

Stinky Tofu

Stinky tofu, a popular street food across China and Taiwan, gets its smell from a fermented brine that the tofu soaks in for hours or days. Chemical analysis of that brine reveals high concentrations of indole, p-cresol, and phenol, compounds your nose associates with decay. Indole levels in the brine can reach over 240 micrograms per milliliter, and p-cresol can climb nearly to 390. Dimethyl trisulfide and dimethyl disulfide add sulfurous notes on top of that.

Once the tofu is deep-fried or grilled, much of that volatile load burns off or transforms. What you taste is crispy on the outside, soft on the inside, with a savory, slightly funky depth. The brine also infuses the tofu with free amino acids like glutamate, serine, and lysine, all of which register as umami and pleasant sweetness on the tongue. The gap between smell and taste narrows dramatically after cooking, which is why stinky tofu vendors can have long lines of eager customers standing right next to what smells like an open sewer.

Natto and Other Fermented Soy

Natto, the Japanese fermented soybean dish, has a sticky, slimy texture and a sharp ammonia-like smell that puts off many first-timers. The bacterium Bacillus subtilis drives the fermentation, producing a range of pyrazine compounds. These same pyrazines are found in roasted coffee and baked potatoes, but in natto they appear alongside ammonia and other breakdown products that make the raw smell intense and polarizing.

The taste is earthy, nutty, and rich in umami. Mixed with mustard and soy sauce over rice, natto delivers a deep savory satisfaction that the smell alone would never predict. Longtime natto eaters often report that the smell becomes pleasant over time, which aligns with how the brain’s insular cortex learns to associate familiar food odors with the tastes they accompany.

Durian

Durian is banned from many hotels and public transit systems in Southeast Asia because of its smell, which has been compared to turpentine, gym socks, and rotting onions. The fruit produces dozens of sulfur-containing volatile compounds that are extraordinarily potent at low concentrations.

Fans describe the taste as rich custard with notes of almond, vanilla, and caramel. The flesh is creamy and sweet, with a complexity that earned it the nickname “king of fruits.” The disconnect between nose and mouth is so dramatic that durian is probably the single most debated food in the “tastes better than it smells” category. Some people never get past the odor, but those who do often become devoted.

Everyday Foods That Qualify

Not every example is extreme. Plenty of common foods taste better than they smell, even if the gap is less dramatic:

  • Hard-boiled eggs release sulfur compounds, especially when slightly overcooked, but taste mild and creamy.
  • Sauerkraut smells sharply acidic from the jar but tastes tangy and refreshing, particularly when cooked into dishes.
  • Brussels sprouts produce sulfurous odors when cooked, yet roasted sprouts taste nutty and sweet.
  • Kimchi has a fermented funk that can fill a refrigerator, while the taste balances sour, spicy, salty, and umami.
  • Blue cheese smells of ammonia and mold but delivers a sharp, salty, creamy flavor that pairs well with honey and fruit.
  • Canned tuna has a fishy smell that many people dislike, but the actual taste is mild and protein-rich.

Why Your Brain Learns to Bridge the Gap

If you eat a pungent food enough times, your brain updates its expectations. Neuroimaging research shows that the insular cortex, the brain region where taste and smell signals overlap, responds to food odors based on learned experience. The more you pair a particular smell with a rewarding taste, the more your brain codes that odor as pleasant. This is why people raised eating natto or durian rarely find the smell offensive, while newcomers recoil.

This learning process also works in reverse. If you eat something that makes you sick, the smell alone can trigger nausea long afterward. The system is flexible and experience-dependent, which means your list of foods that “taste better than they smell” is partly personal. With repeated exposure, many initially off-putting foods cross over from disgusting to delicious.