Absolutely spot on Mrs. Pilot. We're going for the same reasons. I think we've enjoyed the experience of Hong Kong and have also made some good friends. We have also benefited from it financially (on paper at least) and still think its worth giving the place a go. But not enough to play Russian roulette with my children's health. Young developing lungs must surely be effected by the filthy air. Brown/yellow skies are here to stay and equal huge profits for the factory owners. Most of them probably spend little time in Hong Kong anyway and can easily escape to their overseas homes from time to time.
Walked past a posh children's clothes shop in Central last week. The place was also selling/marketing those very expensive Swiss built air purifying machines. Clearly aimed at the new mums who will be anxious about their newborn's health and quite able to afford such an expensive device. Great marketing and typical of Hong Kong.
It's a tough choice but we couldn't ignore the pollution any longer.
Good luck.
BI