What is Ariza giving him here? Looks very underhand to me, discuss http://instagram.com/p/h7hoPEBaVQ/#
The word "dodgy" means nothing outside of the UK. That said, I think he's just blowing his nose. A fighter can't do it on his own with his gloves on.
Now that I think of it, I remember a trainer called Panama Lewis who used to give his fighters a stimulant between rounds. Luis Resto said it was "something that opened up your lungs and gave you new energy".