What is another word for really good smell?

Here are some words to describe a really good smell, depending on the specific nuance you want to convey:

General positive:

* Aromatic

* Fragrant

* Perfumed

* Delicious

* Sweet

* Pleasing

* Invigorating

* Heady

More evocative:

* Enticing

* Alluring

* Exquisite

* Divine

* Heavenly

* Wonderful

* Captivating

Specific to food:

* Savory

* Appetizing

* Mouthwatering

* Scrumptious

* Ambrosial

Other options:

* Wonderful

* Gorgeous

* Amazing

* Superb

The best word will depend on the context and the specific smell you're describing.