These substances are relatively harmless compared to longer-living man-made plastics like polyethylene.
No, I haven't; we have some rugs, most of them are wrapped in polyethylene.
Any of various artificial resins consisting of many ethyl groups (CH2CH2) joined end to end or in branched chains. Polyethylenes are easily molded and are resistant to other chemicals. They can be repeatedly softened and hardened by heating and cooling, and are used for many purposes, such as making containers, tubes, and packaging.