UPDATE:
All the standard recommendations say you can only store refrigerated raw chicken for 1-2 days, but that seems really conservative, since it's designed for immunocompromised people. Therefore, I'm left wondering, what is the practical limit where a reasonable adult with no health issues should actually throw food away (while it still has no obvious signs of spoilage like mold or smell)? Perhaps more like 1 week in the example of chicken?
ORIGINAL QUESTION:
I have a pack of raw chicken breasts that has been in the refrigerator about 1 month (28 days) past its "use by" date. It is the type on a foam tray with a plastic wrapper, still sealed in the original packaging. Upon opening it, it smells fine, and there are no off-colors. Is this still safe?