That would be neat to find out. I've witnessed first-hand how just a tiny amount of water in a suppressor on a handgun can make a noticeable difference. Taking it a step further, I'd like to see high speed footage of a rapid consecutive shot, with a lot of the oxygen burned out of the suppressor. There is a phenomenon sometimes called "first round pop" where the first shot is louder due to powder that didn't burn in the barrel igniting inside the suppressor. I would think that there would be less flash and more smoke to illustrate the flow of gasses.