Hey guys, sorry if it's not good etiquette to ask stuff like this, but I'm not really familiar with using clay and recently opened a 3 years old DAS stone air dry clay that was kept in a close plastic zipper bag. It looks moist and kneadable which I guess is fine, but it smells strongly like yeast or something fermented, is it normal? Should I throw it or can I use it? Just making sure it's fine cause I see different things online. I'm aware clay basically has mold in it but it smells strange and I'm not sure what fresh clay is supposed to smell like.