A scent is the smell that something gives off. It's like when you walk into a room and can tell what someone has been cooking.
When we talk about scents, often we mean perfume or fragrance - so a nice cologne on a guy might be considered a strong scent. But we also use the word for everyday smells too: "I love the scent of freshly baked cookies," or "What's that bad scent coming from the trash?" If you have a garden, you might talk about the scent of blooming flowers. Some people are really sensitive to certain scents and get headaches when they smell strong perfumes or chemicals.
How common is "scent"?
Word scent is considered uncommon in modern English. It appears most frequently in fiction texts and less often in other writings.
Definitions
noun
A distinctive smell.
Example: the scent of flowers / of a skunk
A smell left by an animal that may be used for tracing.
Example: The dogs picked up / caught the scent but then quickly lost it.
The sense of smell.
Example: I believe the bloodhound has the best scent of all dogs.
(chiefly uncountable) A substance (usually liquid) created to provide a pleasant smell.
Example: a scent shop
(figuratively) Any trail or trace that can be followed to find something or someone, such as the paper left behind in a paperchase.
Example: The minister's off-hand remark put journalists on the scent of a cover-up.