Busy day today for Myanmar, zilch for Thailand. I had another 2 zoom interviews for schools in Myanmar, and another 2 job offers. Nothing at all for Thailand. (I am only considering these 2 countries, Thailand because that's where I am, where my estranged family lives, and a country that I obviously know very well, speak the language blah blah blah. Myanmar, because that is where the majority of my teaching employment has been, and because of my educational charity efforts over there).
As for my health (lungs), I have to take chances wherever I live. But a warm/hot climate with clean air seems to work for me. There are many places in Myanmar that meet those criteria. Yangon is not top of my list because of the factory and car pollution...