I had one last week. Bunged up sinuses on Tuesday to Thursday, then the cough startged on Friday. I thought about not riding on Saturday afternoon, but felt a bit better on Saturday morning, so decided to turn up and see how long I could hang on to the B race
. The symptoms seemed to disappear from about 2pm, except for a "raspy" chest when chasing down the breakaway before the first prime.
The cough was back with a vengeance for the journey home, though.
It is still niggling away in the background and the sinuses still feel a bit "full" in the morning.