Even with careful washing, food containers tend to accumulate unpleasant odors.
A pharmacy product will help eliminate the stench and restore a presentable appearance to your lunch box.
There will be no hint of an unpleasant smell. The effect will be as if the container was recently purchased.
You will need 5-10 tablets of activated carbon. Fill the container with water, place the drug inside and leave for 2-3 hours.
If the smell is very strong, it is better to make the solution in the evening and not drain it until the morning. You should do the same if the smell does not disappear within a few hours.
Activated carbon is an excellent absorbent. It absorbs all foreign odors, so all you have to do is rinse the container with water and you can use it for its intended purpose.
Charcoal is used in other similar cases, too. For example, when you need to get rid of a stench in the refrigerator or room, as well as under the sink, where the trash can usually be.