I leaked too, now that I look back it seems like a distant foggy memory, but what I do remember is that the fluid was going down the back of my throat and it was salty to taste. I ended up with a spinal headache that had me laid out flat on my back, and then I required surgery to block up the air pockets behind my ear which is where the original "glue" didn't hold. Four more days in the hospital and I was good as new...well good as post AN surgery can be.
Not sure where your curiosity stems from, perhaps the nurses have just made you a little paranoid or your nose is running or something...
I also just want to note that since my surgery my nose runs frequently, not sure why, but I have my theories. I do not think there is any CSF involved or anything, but I am not alone. Another Forumite has the same issue and neither of us really know why. Try not to worry about it, and if you are really concerned call your ENT...or I know it sounds gross, but you can always taste the fluid coming out of your nose for a salty taste...