Hot springs help breathing?

I live in Taiwan and have recently been trying out the hot springs here. There are quite a few round the island, although there are far more in Japan - over a thousand. Usually, I go and have a soak for half an hour or so. They have different kinds of water, depending on the mineral content but thespring nearest me is classed as 'green sulphur'. It's supposed to be good for all sorts of health problemsbut they do particularly mention 'respiratory ailments'. Good thing, as it's quite polluted here!

Anyway, I wanted to ask, has anyone tried the waters in the UK. Bath or Leamington Spa? And did it have any effect?