Quote Originally Posted by Cerulean_sea View Post
You could try doing the nose RC (pinching your nose and then trying to breathe through it, if you're in a dream you will be able to do it). I have never heard of that failing for anyone.
It's possible though. If you really think you are awake and really expect not to be able to breathe, it could be. Probably never happens, but it is possible.

And then there's also the possibility that the dream messes with your brain, making you believe that breathing through your nose while pinching it is normal.