Old stuff indeed (Jmig) I have fond memories myself of flying in the Tristar on holiday and whilst wearing a blue suit in the Timmy's.
Thing is the MOD were too tight to pay for the full filtration systems in the timmy's, after all what does a rufty tufty grunt need with clear air!
Result particularly if flying to the South Atlantic 2 x 8 1/2 legs was evrybody on board ended up with what was nicknamed as South Atlantic flu. This normally knocked everyone out for 3 or 4 days in the first week, less if you were lucky!
It wasn't just germs causing this syndrome either!
