![Yellow powdery substance in old couch cushions. A few people told me that it is broken down foam but that doesn't seem to make much sense because of the poly fill. Is Yellow powdery substance in old couch cushions. A few people told me that it is broken down foam but that doesn't seem to make much sense because of the poly fill. Is](https://preview.redd.it/d2oyuwxc0q091.jpg?width=640&crop=smart&auto=webp&s=185ce6dd55b6348f49b0d92af972f0520c14e91e)
Yellow powdery substance in old couch cushions. A few people told me that it is broken down foam but that doesn't seem to make much sense because of the poly fill. Is
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