I like to use microfiber cleaning cloths in my kitchen, as well as regular sponges.
A fast and easy trick to get the sour smell out of either one is to give them a few squirts of hand sanitizer, such as Purell. I add hand sanitizer until I no longer smell the sour smell. In fact, I keep a pump bottle of Purell on my kitchen counter for just that reason.
Now that hand sanitizer is harder to find, I refill my bottle with homemade hand sanitizer (alcohol and aloe vera gel). Easy!
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