Well, fixing Audio can be a real challenge. Much depends on the frequency range of the offending signal, and on any overlap with needed Audio.
This ARTICLE will give you some general tips.
PrE offers several Audio Effects, that are generally useful. If they do not cover the frequency range, then one is faced with using an audio editing program, like Adobe Audition, the freeware Audacity, or others.
So very much depends entirely on the signals, both the ones that one wishes to eliminate, and the ones that one wishes to keep.
You can try using the tools in the audio mixer which appears on the right side of the timeline.