[caption id="attachment_63502" align="aligncenter" width="624"] Image Source[/caption] Aqueous film-forming foam (AFFF) is a firefighting foam used to extinguish fuel fires. It contains a group of chemicals in the family of per- and polyfluoroalkyl substances commonly referred to as PFAS. Over time, these substances have been linked to some serious health problems, even cancer. If you have been exposed to AFFF and developed cancer, you have the right to file an AFFF lawsuit. Below are the types of cancers often linked to AFFF exposure.