stench
The word you are looking for is "aroma".
"Stinky" refers to something that has a strong and unpleasant smell. It is often used to describe odors that are foul or offensive.
The word opposite pleasant is "unpleasant"
UNpleasant.
Noun forms for the adjective unpleasant are unpleasantry and unpleasantness.
In the word pleasant we will add un and the answer will be unpleasant
The word "pleasant" has its roots in the Latin word "placare" meaning peaceful.
The word "aroma" is usually used to describe a pleasant smell.
The word with the closest meaning is pleasing.
pleasant
Aroma
grose
The word you are looking for is aroma.It's five letters, ending in A.An aroma is a smell or odour that is pleasantly nice. For example, food.