Al.e.
great point, but it just highlights the 'Hong Kong Spirit' instead of fixing the problem at source, you can boost your economy by selling very expensive air-filtration units to the fearful. And although the IQAir units are "assembled in Switzerland", i don't think all the raw material and piece parts are made there....probably a lot closer to the Peak, than the yodelling filled valleys around the Matterhorn!
Best Regards,
N1 Vibes