I would check the fabric for "storage fading and/or musty smell" and then wash. I didn't check some fabric I just bought last week-end. The partial bolts were taped shut with yardage written on them, and the sale was outside with a good breeze blowing. Got home and guess what...
I washed the stuff and my vet is going to have a whole bunch of cage pads, so it wasn't a complete loss.