The mineral water that I was recommended is: (you will have to translate the page) https://cs.wikipedia.org/wiki/Vincentka https://cs.wikipedia.org/wiki/Vincen

The mineral water that I was recommended is: (you will have to translate the page) https://cs.wikipedia.org/wiki/Vincentka https://cs.wikipedia.org/wiki/Vincentka It is known to have soothing/therapeutic properties on airways etc. It has been used in inhalations and other cures since at least the 17th century. Anecdotally, I tried a regular saline solution as well (would be cheaper) and Vincentka definitely feels better.