PVC functioning properly is food safe, however, degradation can cause the liner to begin leaching harmful chemicals, like plasticizers.
Over time, PVC releases volatile organic compounds (VOCs) into the air. Studies done by the EPA have shown that human exposure to these VOCs can lead to nausea, fatigue, dizziness, and ENT irritation. At room temperature, PVC is stable. However, the chemicals found within PVC manufacturing have a low boiling point, meaning that they can be quickly released in the case of even minor heating.
