I found an early morning transit of Dubai a quite horrifying experience. Trying to find a free toilet cubicle was completely impossible, and massed ranks of people cleaning out their sinuses into sinks was an experience not to be repeated!
Quite agree with that - the last time I went through Dubai airport the condition and queues for the toilets were utterly disgusting and insufficient. And having worked many years in China - I know a lot about disgusting toilets unfortunately.