Ok so I finally got into saving and reusing yeast, and tried to reuse yeast for the first time in my yeast starter, and had an interesting outcome. It seemed like it didn't want to go, but there was some action going on via the airlock, so I left it alone. Today I brewed, and grabbed my starter right when I was ready to pitch (why did I wait this long to check it?), gave it a swirl, and the liquid blew up like it was over-carbonated, bubbled all up. It smelled like crap too. I have smelled that on a bunk batch I had about a year ago, but Im curious how the hell this happened. Yes I sanitized, yes I did everything like I have done using fresh yeast and had no problem. Anyone have any ideas as to why this happened?