Over time, the thermos acquires a specific smell. To classify it as pleasant is difficult. Yes, and to persuade yourself that the quality of the contents of the light amber does not affect, almost impossible. Meanwhile, there is a way out - and not one.
Simple but effective ways to get rid of the smell of a thermos
"Reanimate" thermos help spoon of mustard powder. Enough to fill it in a thermos, pour hot water and leave overnight. In the morning you will only have to rinse the thermos well.
You can do the same with kitchen salt. There is no need to skimp: instead of 1 spoon you can safely take 2-3. The main thing - it is good to rinse the thermos to completely get rid of the remnants of salt.
Will help in the fight against bad smell and lemon. To clean, you need to fill the thermos with half warm water, add 2-3 cups of lemon, cut into slices or lemon juice, and then, after closing the thermos, shake well. The effect will be stronger if you leave water with lemon in a thermos for a few hours. An alternative to juice is citric acid.
The same procedure can be done with vinegar.
Cope with this task and baking soda. Enough to fill in a thermos 3-4 teaspoons and pour it to the top with warm water. After making sure that the soda has dissolved, you need to leave the solution in a thermos for the night, and then rinse it thoroughly.
Armed with information, it is easy to get rid of the odor in the thermos, the main thing is to want it.