The Simple Trick To Get Rid Of The Foul Odor In Nespresso Ice Cube Trays - Tasting Table
Briefly

Ice cubes are meant to cool, but many users face odor issues from silicone trays. Heating these trays can eliminate trapped smells effectively.
Heat treatments are necessary because silicone retains odors at a molecular level, and surface cleaning won't remove the deep-seated scents, making baking or boiling essential.
Read at Tasting Table
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