The human nose is like an antenna, with every breath it scans the air and filters it through.
We use our sense of smell to first, check and then to experience the pleasure of the eaten food.

The mere scent of food gives us the pleasure which is similar to that of smelling a perfume or the scent of flowers. The essential oils found in plants have two functions: to attract and repel.
Usually, oils act as a magnet to some which help the reproductive process. Oils can also defend plants from bacterial infections or potential predators. When it comes done to smells, the same can be noticed in people – disgust can be a signal of danger, and a good smell might be related to breeding and reproduction.

There is one more additional attraction category in people which is solely motivated by pleasure.
These reactions have been the plot of study with great interest regarding how people are affected by smell.