Well, this is a 2-pound chunk, which cost considerably more than the Wal-Mart size, but besides that, there are several other things that make me want to know how good it is.
One, I was (and remain) unable to go get more, at this point, for various reasons (which are personal to me, but nonetheless insurmountable, for the moment).
Two, I am actually curious as to whether the cheese is still good because in the future I might choose to buy more, when circumstances allow, and CHOOSE to keep it for an extended period of time, still wrapped, before opening it. My income is not regular (I work for myself), and I like to buy things when I am able and stock up for leaner times.
Three, I waste enough food, as it is (most of us do, I think), but this seemed a good candidate for using what I have, rather than just throwing it out without investigating. I would definitely not drink soured milk or eat anything that had gone moldy, or even consider eating from a can of food that had started to bulge. However, hard cheese appeared to me to be perhaps the safest thing to last a long, long time without being unsafe.
I do understand that I don't know what made this package puff up, but based on some research I did, it seemed reasonable enough to me to take a chance. We will see whether that chance was a bad one to take in a few days. I believe many food poisoning microbes take anywhere from 12-48 hours to do their dirty work.