My friend suffered badly from lung infections in Hong Kong, hospitalised, constant medication, check ups, frequent xrays. Then two years back a family situation required her back in Europe and she departed to small town European life. She binned her medication on leaving HKG.
Since then, no problems....no medication..... Earlier this year while discussing same with a Dr. who is a pal during a dinner party, he suggested her having an xray to ensure it had cleared properly. She accepted his invitation, the X Ray and examination came back crystal clear. I should add she suffered no problems before going to HKG in the first place, she spent 3 years there.
HKG Air is poison !!!!