Why doesn't the coffee smell good?

Today, we will discuss a very interesting question. Coffee drinkers are not in the minority, and have even become a must-have drink for every family. But why doesn't the coffee smell good? The taste of freshly brewed coffee is the first pick-me-up in the morning. Today, scientists claim to have found out why coffee doesn't smell good.

Barry Smith, a professor at the University of London, recently published a study on why coffee doesn't smell good, the Daily Telegraph website reported. the report concluded that because we feel the smell twice, "one is when you inhale from the external environment, and the other is when the smell is exhaled out through your nose."

Smith believes that the act of swallowing coffee sends an aroma from the inside of the mouth to the nasal cavity, stimulating the brain to produce a "secondary sense of smell," which is not as strong as it was when it was first smelled. It creates a completely different, less satisfying feeling.

"like Epvass cheese, it smells like smelly shoes," Smith said. Once it's in your mouth, you smell it through your nose in the other direction, and it becomes delicious. "

He added: "there is another example that the taste changes with the direction. The freshly brewed coffee smells great, but do you always feel a little disappointed every time you drink it? It never tastes as exciting as it smells. "

Although we have taste buds on our tongues, 80% of the taste we taste is actually sensed through the olfactory receptors in the nasal cavity. These receptors, which send messages to the brain, feel differently about smells that move in different directions.

But Smith also points out that in the case of coffee, another reason for the taste change is that 300 of the 631 chemicals that make up the taste of coffee are killed by saliva, causing it to change before we swallow.

In addition, he revealed that only two known flavors-chocolate and lavender-feel the same when entering and emitting from the nose.

The conclusion we can draw from this is that the feeling of the human body to the secondary smell is not as strong as that of the first time, so that the smell of coffee is not as good as that of drinking.