Seriously, we use polyurethane for our food (packaging, cups, plates, cutlery). Don’t worry unnecessarily about that. If something smells, it is a propellant that can still off-gas a bit after production (depending on which one is used). Normally, water is sufficient as a propellant, but depending on the desired properties, additional propellants are sometimes used. In the past, the well-known CFC was used for insulation materials. Even though it was harmless to health, fortunately it is no longer allowed (ozone), although honestly it must be said that there is still no equivalent gas, so that poorer insulation values and more produced insulating material have negatively affected/are affecting the CO2 balance. So there are always two sides to the coin. I basically think it is right to think about such things, but in this case I consider it absolutely harmless. Plastic is (unfortunately) often portrayed in a very negative light nowadays. In the past, the health of workers in production plants was sometimes treated quite carelessly, but fortunately this has been over since the 1970s in civilized countries (unlike the metal processing of our car manufacturers). As a finished product, essentially all plastics are completely harmless at first, because the molecular chains are so long that they cannot cause harm. All plants ultimately consist of nothing other than long molecular chains. It only becomes concerning when materials are added to the plastic (e.g. plasticizers that can off-gas) or when it is used incorrectly. If you heat a Teflon pan so much that the PTFE thermally decomposes, the material itself can’t be blamed, just as the plastic can’t be blamed for being much lighter than most other materials and therefore floating. Humanity has always disposed of all its waste in the sea. With most materials, we simply never see it again because it sinks and sea creatures have to deal with it. Our plastic waste just ends up washing up on the beach.