1 baking soda to remove the odor in the thermos cup: pour hot water into the teacup, add baking soda, shake well, let it stand for a few minutes, then pour it out, and all the odor and scale will be removed.

2, toothpaste to the thermos cup odor method: toothpaste can not only remove oral odor to clean teeth, but also remove the odor in the cup. Wash the teacup with toothpaste, and the smell will disappear immediately.

3, salt water to the smell of the thermos cup method: prepare salt water, pour it into the teacup, shake it for a while, then pour it out and rinse it with water.

4. Boil water to remove the odor of the thermos cup: you can put the teacup in tea for 5 minutes, then wash it with water and dry it, without odor.

5, milk to the thermos cup odor method: pour half a cup of warm water into the teacup, then pour a few spoonfuls of milk, gently shake, let stand for a few minutes, then rinse with water to remove the odor.