Merino Clothing (base layers, etc)

I used to use HH baselayers for skiing - but they developed perma-smell really easily and also became very cold when you sweat into them. Much prefer merino now.

Have the same problem.

The only way I can extend the life of my HH baselayers is to shave my armpit hair and use those salt deodorant that kill the bacteria (since they're the one that produced the smell).

The bacteria cling onto your armpit hair, hence shaving it off.