Quote Originally Posted by OakLeaf View Post
The jersey I had on over the wool positively reeks. I'm sure the jacket could use a washing too. I'd already worn the SW once for hanging around the house, but even though it was the closest layer to my skin, it still doesn't smell. Amazing.
I notice this all the time! If I wear just polyester jersey...it smells afterwards.
If I wear a merino wool base layer and a polyester jersey over it...the wool base layer doesn't smell at all but the poly jersey still smells!
Apparently the teeny bacteria that multiply and cause underarm sweat to smell just don't like the environment of wool- they don't breed and multiply in it much. But when they get into other fabrics they have a field day and multiply like mad....and then smell. Armpit bacteria does not multiply easily in wool- that's why wool can be worn quite a few times before it gets any odor under the arms.