@Halfshadows
You have to manage CO2 emissions anyway, when humans breathe. So that's not really an issue... After a quick search, I found that:
"The bubbles of carbon dioxide in carbonated beverages aren't buoyant in a weightless environment, so they remain randomly distributed throughout the fluid, even after swallowing. This means that carbonated beverages including soft drinks and beer may become a foamy mess during space travel."
Emphasis on weightless-environment. Which isn't relevant where they reside, which seems to have artificial gravity, but may be relevant if you're space-faring.
Either way, nice going on the author for doing the research, but overall, fizzy drinks in their spacestation has very few reasons to not exist.
P.S: Drink more water, people, lel.