As previously posted, every game worn jersey that you win from the UND hockey program is washed before it is put on display for bids. When the winner gets the jersey it is clean! So, much as you may profess or like to think it has all the 'sweat and other goodies' from the player who wore the jersey, it's long gone before you get it. I also know that the Holy Cross game worns were also washed before we got them.
I don't know about any other programs game worn jerseys. There may be some that are sold/given/taken right after they have been worn and never washed. AZ, do you know?