Keeps Out the Grease, But... Chemicals called diPAPs break down into the chemical PFOA, which is resistant to oil and water and is used as liners on carpets, nonstick pans, microwave popcorn bags, clothes, electronics and pizza boxes, among many other applications. A new study has found this compound in human blood. In animal experiments, PFOA has been linked to cancer, developmental problems and other issues.| Discovery News Video