Is there an olfactory counterpart to quiet?

single-word-requests

I would describe a faint sound as being quiet, and recently I wished to express the idea of quietness for smells. I wanted a word like faint but specific to smells (or smells and tastes if such does exist). An example sentence might be

This tarmac is _____ after the rain

Does such a word exist?

This similar question asks about things that have no smell at all. While similar I am seeking to describe something that does have a smell albiet a faint one.

This tarmac is faintly odorous after the rain.

This tarmac is faintly scented after the rain.

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