Meaning of “smell” - Learner’s Dictionary

smell

noun uk us /smel/
QUALITY [ C ]

B1 the quality that something has which you notice by using your nose:

The smell of roses filled the room.
There was a delicious smell coming from the kitchen.
UNPLEASANT [ C ]

an unpleasant smell:

I wish I could get rid of that smell in the bathroom.
ABILITY [ U ]

B2 the ability to notice smells:

Smoking can affect your sense of smell.

(Definition of “smell noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)