Or outdoor textiles, or toilet paper, or paper food boxes, or furniture with stain repelents, or cosmetics, or school uniforms, or breast milk, or microwave popcorn bags, or carpet cleaners, or candy wrappers, or pizza boxes, or cattle, or agricultural fields and products, or houshold dust, or water, or firefighting foams, or dental floss, or air ... better to stay away from it all.
https://en.wikipedia.org/wiki/Per-_and_polyfluoroalkyl_subst...
https://en.wikipedia.org/wiki/Perfluorooctanoic_acid