Greaseproof paper food packaging can expose people to PFAS if the chemicals migrate into the packaged food. But discarded products present other exposure opportunities. For instance, depending on the disposal method, packaging can release PFAS into compost, landfill leachate, or (if incinerated) the air. In addition, recycled products made from PFAS-treated paper can be a source of PFAS exposure.10 Image: © onajourney/Shutterstock.