Habit loops, once created never truly die off. It doesn't matter if you've been a year away from it or 5. Once you see the trigger necessary for you to get the craving for the reward given off from drinking soda, you'll want it as bad as you've always wanted it, and depending on the circumstances and how you're feeling, it's very likely you'll go into auto flight mode and go straight for it.
There is a golden rule to habit change, it's that you can't eliminate bad habits, you can only change them. For instance it's very possible, using the same cues for you bad habits to create a good habit from it, one that will override your temptation for soda and instead make you do something else.
Before you can do this you will have to identify what your cue/trigger is. What has to happen either visually or auditorily for you to get a craving for soda? This one is important and you have to get it right. Next identify the reward, what do you get from drinking soda that gave you the craving for it in the first place?
So what is your cue/trigger?
What is your reward?
(Once I know these I'll setup a hopefully helpful plan that will help you overcome your last addiction)