I can answer that but I doubt you'll thank me, no there isn't.
Problem is there's nothing that distinguishes the unwanted from the wanted. If what was getting in the way was say a high pitch whine then you could perhaps filter that out without harming too much what you wanted to keep. But in this case what you want is the same as what you don't want. You might, just perhaps get a small improvement if the voice you wanted was very different to the rest, say a female speaker and the background was all male speech.

This is why you need to get mics as close as possible to what you're trying to record and why on camera mics are BAD news.

Bob.