Since our party has been going on for quite a while now and I can't remember any swamp that can be called 'rejuvenating' in terms of bodily cleanliness I'd suspect that none of our characters currently is hard to find using olfactoric tracking devices (codename 'N.O.S.E').

Given that An-Hasst has ventured particularly deep into said oasis of destilled water polluted by the world's most advanced washing powder due to absolutely no ground pressure under his feet, I'd even go as far to say that he currntly might smell rather exquisitly beneath his thick armor. Unless there are some additional unknown variables caused by elvish blood that add some degree of auto-maintenance to his skin.