I picked up a brisket three days ago and put it in the refrigerator to smoke tonight. I took it out to prep it this morning, and when I cut open the vacuum seal, I got hit with a strange smell, perhaps a bit sulphurous. It didn't dissipate after rinsing the meat, and I also found browning on various spots along the fat cap. None really on the meat section. The vacuum seal was good as near as I could tell, and the refrigerator never lost power or raised in temperature (at least not enough to notice any change). I am going to take it back for a refund, but I wanted to hear from anyone with experience with this. Unfortunately, I don't have enough time to get another one and get it rubbed in time to get it smoking. Looks like next weekend, perhaps.