This is a normal phenomenon. Cats have a very sensitive sense of smell, and their way of understanding the world is through their sense of smell. Therefore, when there is any abnormal smell in the living environment, it will look for the source of the smell, such as a stranger coming. The unfamiliar smell of its body will make the cat alert, and if there is anything delicious, the cat will also look for it through its sense of smell.

Tips:

Cats have a keen sense of smell. Parents should not let them smell too many irritating smells, as this will damage their sense of smell.