Mentha suaveolens also known as Woolly Mint or Round leaved Mint both of these names are descriptive as the leaves are much rounder than Spearmint and they are hairy.
In the process of identifying this plant I was sent out to gather samples and to describe the smell.
The Latin name Mentha comes from Greek mythology. Minthe was a nymph. She was about to seduce the God Hades (of all people), she had in turn been seduced by his fast car, when Persephone caught her and turned her into a flower. Now she seduces everyone.