Don't cook with leftover Holi oil! Reuse it for rust, polish, and more

• Reusing cooking oil for food is harmful; it increases trans fats, polar compounds, and cancer risk.
• Leftover mustard oil degrades, becomes bitter, and develops a foul smell, making it unsuitable for cooking.
• Use it to prevent rust on iron objects like scissors, knives, hammers, and locks due to its protective layer.
• Mix with vinegar to polish old wooden furniture, restoring shine and protecting against insects.
• Lubricate creaky door/window hinges and use for plant pest control by attracting insects away.