To make it an adjective:
* -ly: fragrantly (adverb) - describing something with a strong, pleasant smell
* -ness: fragrance (noun) - the quality of having a strong, pleasant smell
To make it a noun:
* -ance: fragrance (noun) - a strong, pleasant smell
* -ation: (rare) - can be used to create a noun meaning "the act of making fragrant"
The most common suffix used is "-ance" to form the noun "fragrance."