When you are in a nice relaxed deep sleep, the last thing you want is to be awakened by some noise or other. As this cute little puppy is happily asleep he is awoken by someone breaking wind. The problem is he cannot really blame anyone else, as unfortunately for him it is his own body that is responsible.
The course of action he takes is one I can assure you many others have chosen in the past.
He looks around him as if to say who did that, before settling himself down to get on with the rest of his little nap. Provided of course that his body allows him to.