So I found a radio drama in which Benedict Cumberbatch plays a barrister with a bad case of the flu.
The drama is called "Rumpole and the Explosive Evidence". There is coughing, sniffling, nose-blowing, stuffy talk, cold talk in general, ...I'm only 5 minutes into it as I'm writing this, annnnnd... Yes. There's the first sneeze as well, at 5:10. Beautifully acted. (Edit: it was not the last one. Not by far. And there is contagion. And Ben's character blessing another man.)
Ffffffffffffff. Damn this man. I want my ovaries back. 
I'm afraid I can't post a link to the drama, but there are sites where you can download it. See third post in this topic.
ANYWAY. There is a drama with Cumberbatch acting out a rotten cold. That's what I'm trying to say here. <o>_____<o>
...And that's yet another Holy Grail down. *DEAD*