Hmm eventually, unless you want to take your O2 bottle scuba diving in your search for mermaids, that might hasten the process for you. (I wonder who thought that would be a good idea to put oxygen tox into a computer game by the way? Weird). By the way, potentially suprising fact of the day, lack of carbon dioxide is probably more dangerous. A bit of hyperventilation can cause loss of consciousness within a short time which is not so good if you’re in the water at the time.
(BTW I always thought there was some sort of banana conspiracy with to cutsie eat more bana-nana-nana-na-na-na’s ads Doctor. Thanks for confirming my concerns 
)