yes but remember you breathe out co2 all the time. Making a fizzy drink is way lower than many other things you do. As one person im going back and forth on would say going vegan would massively lower the amount of co2 your responsible for putting in the atmosphere and actually just not eating beef would give you the majority of that lessening. walking/biking(even electric)/public trans instead of driving would also be huge. even if the driving was in an ev. Not using bitcoin and its ilk is big to (in absolute terms its only so big but for what it does its a massive cost in energy). The single biggest thing a person can do is not have kids although thats a big ask but the co2 of most eco friendly folks is going to still not be low enough if you have a kid and he has a kid and so on. So for example the average french person is about 5 tons of carbon a year while the average north american is 3x that. so you start adding capita and thats way more carbon. Anyway worry about the fizzy drink is sorta a penny wise pound foolish type of thing as far as global warming goes and honestly its not really causing any more of general pollution which is an issue even if we found some unlimited energy source to do sequestration.