What does carbon dioxide do for your body?

Answer 1

A really low dosage like we have in beverages doesn't have dangerous and permament effects, but if the amount of carbon dioxide is more than oxygen in a sealed room, it causes being poisoned and also your lungs to bleed and to die BEFORE someone in the same room dies because the lack of oxygen.

Answer 2

It does absoloutley nothing, it is our waste from the respiratory system (breathing) that cannot be used.