The ancient Greeks already knew the positive effect of salt on the respiratory tract.

Hippocrates recommended the inhalation of salt water vapors in cases of inflammation of the respiratory tract

Fast forward to 1843, when a Polish physician, realizing that among miners the rate of lung disease, which was widespread at the time, was much lower than among the rest of the population, related his analysis to the beneficial effects of Salt.

Thus we come to our own time, with the spread throughout Europe, especially in the North and East, of Salt Caves.