Abita Root Beer Still Good After A Couple of Years?

I noticed that I still have a couple floating around the back of my fridge from probably a couple of years ago. I don't drink soda, but I do use them to cook with (carrots, glazed pork, etc). If they weren't bottles, I'd toss them, and I did a search for Abita customer service but couldn't really find a contact for my question.

What you say? Give it a smell / taste? Toss em and spend another few bucks? Good for use? I'm not sure what to expect from soda after a couple of years.