I just bought a mattress protector for our new king-size bed. When I opened it I smelled that gross new plastic smell, and looking on the label, I saw the plastic barrier is made of PVC (polyvinylchloride). Please tell me what you all know about PVCs, and whether or not this is a safe thing to put on our bed. I am not sure what to do. I won't put in on my bed until I am sure it is safe.