I have also developed a persistent irritating cough which is exacerbated during and after a 400 flight... Also during the flight I find that during the latter hours I start to sneeze a lot and also get itchy eyes and nasal passage...
Cathay should perhaps spend some of their hard earned cash on properly cleaning their aircraft. In today's increasingly litigious environment it is only a matter of time before the health related lawsuits start to appear.
IMHO of course...
