I have just spent the last 3 weeks recovering from a bad chest infection,which turned into Bronchitis.Not nice and in a very clean air climate.The Doc first words were ''Do you smoke''.He reckoned heavy pollution doesn't do Asthma or Bronchitis sufferers any good at all.Smoking is a real no no.
It's only when you can't breathe properly,that you realise what hidden dangers there are inhailing the HK soup.