How to get a bad taste out of a plastic thermas?!

Question:

How to get a bad taste out of a plastic thermas?

Answers:

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try washing it out with white vinegar. then rinse WELL!!!

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You don't , that's why you get the ones with the glass liners in them.

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You might try sprinkling baking soda in it and leaving it for a few days. Baking soda is good for absorbing bad smells from refrigerators.

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let it stand for about 1 hour with a couple of drops of dishwashing liquid.

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Clean a thermos bottle! Fill the bottle with water, drop in four Alka-Seltzer tablets, and let soak for an hour (or longer, if necessary.)

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Fill it with a strong bleach solution and let stand for a few hours. Or as someone else said, try soaking in a vinegar solution.

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