Here in Germany there is a "sparkling sports water" thing that is apparently infused with oxygen (instead of.in addition to CO2 for sparkle,.idk). Same bullshit. They marketed that as enhancing your power through the O2.... You know? The O2 in your stomach where you luckily cannot breathe.
Also, if you really wanted the supposed effect, you could always just take a big gulp of air and a then drink some water, the air is still free so far.