With many fresh herbs, including sweet basil, oregano, thyme, savory, cilantro, and sage, I have noticed a distinct, if mild mint flavor, reminiscent of spearmint. This is not a surprise to me as they are all members of the mint family. I found this site -
Herbs of the Mint Family that gives a large list of common, and uncommon plants from this very large family. Many are commonly uses as culinary and medicinal herbs, though they are not actually herbaceous plants.
Just as my wife is overly sensitive to capsicum, I am very sensitive to the classic mint flavor. The dried versions of these plants that I listed don't have that minty flavor to me.
Inchrisin, you may be hyper-sensitive to the menthol and other aromatic oils common to the mint family, and so taste the mint that others don't taste. I know that I taste them, fortunately for me, very mildly as I detest the mint flavor in spearmint, mint candies (I vomited once when my grandmother fed me a York Peppermint Patty). Peppermint is the worst for me, and I'm not fond of horehound either (another mint that used to be made into candies).
Please, not mint ice cream for me, or mint sauce on my lamb.
Seeeeeeya; Chief Longwind of the North