Repatriated
My daughter and I repatriated (to Australia) some six months ago. That clear runny nose she had for three and a half years in HK disappeared immediately (she is now four). Ex husband remains in HK and has had some lurgy (coughing mainly, hacking and some also a non descript, almost consant cold like symptom) for basically five years. Someone called it the "100 day cough" when we first arrived. Well, several hundred have gone by now. The black gunk (excuse me) doesn't come out of my nose any more. Many, many of my friends ignore the pollution because of the $. (We had made a decision to repatriate because of the pollution - the separation simply brought it fwd a little while).