Bought an 8.5 lb. bone in pork butt last night. Expiration date 8/24. Looked good in the package. I opened it up this morning and it had a real strong, almost sulphur smell to it. I was already up and had the fire going so I went ahead and rubbed it and put it on but we are having a couple folks over tonight and I don't want to serve something nasty. Anybody had this? Or any thoughts?