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Do school thermoses already smell bad? Make... | Almanac.com

Do school thermoses already smell bad? Make...

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Do school thermoses already smell bad? Make a thin paste of lemon juice, cream of tartar, and baking soda; fill the thermos about a third full, and shake well. Allow to soak for about 20 minutes, then scrub with a cloth wrapped around a wooden handle. Rinse well.