If it’s silicone pad sheets, for my SP202 I had to bake them at a low temperature and then wash with dish soap to release the odor/oil. When all my other tricks failed, I read about it online, mostly related to cookware that had taken on strong odors.
I’d confirm it’s made of silicone first, but despite my skepticism worked like a charm.
By pad sheets, I mean like this (fwiw):

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