ELI5 Carbonated Water - why does flat soda still taste like soda?

Explain Like I'm 5: Bite sized answers to stuff you should know about - in a mini podcast by ELI5 Explain Like I'm Five Podcast

Why do soft drinks exclusively use carbon dioxide instead of gases like oxygen or nitrogen? Why does "flat" soda still have a distinct taste compared to regular tap water? Why does Perrier extract natural gas from its sp...View more