Breakroom Dilemma

So, I have a problem that has been vexing me: there's an unopened can of Coke Zero in the break room refrigerator. Why is this a problem, you ask? Because I often bring cans of Coke Zero from home: this particular can might be mine. Should I drink it?

Pro

It's been in the same spot for several days.

That spot (in the door compartment) is often where I store things in that fridge.

I don't think there are many folks on my floor who drink that brand.

The nearest vending machine with Coke Zero is down two floors. (In another breakroom with its own fridge, mind you.)

Con

I don't remember leaving it there.

I'd feel bad if I drank someone else's soda.

What to do, what to do.