Wow! No, probably not. I don't scan macros or other plugins.
I only have 1 recommendation right now and it's super simple: look at formula references to find interesting cells then check for a label to the left.
It's all heuristics and easily broken. It doesn't need to be perfect to help though.
Sidenote: I can't believe excel formulas are Turing complete now! Excel is truly a beast!