I see ISS Astronaut Luca Parmitano had a bit of a scare during his latest EVA. Water started to leak into his helmet and he was unable to hear or speak to communicate with the other astronauts. I gathered it must have felt like eternity to get back into the airlock, pressure equalise and then get the helmet off.
http://www.news.com.au/technology/sc...-1226680437193