Wool doesn’t cut it. Just look at the sheep: they stink and look dirty after a day in the moor, despite having been receiving regular shovers during the day.
Seriously, wool has some magic in it. Somehow wool socks don’t turn into hazmat after a day of hiking or hard work, like socks made out of cotton do. I still wouldn’t say that the woolen ones don’t develop a special odour after having been worn in rubber boots for a day.