Hello Lewis and welcome to the Cow Audio Forum.
You mean someone bumped the boom mic or is it body and/or clothing noise with a lav?
If they are within (or under) a word, there's not much you can do. Try rolling off the low end, but as you do that the voice and room tone will also get thinner and perhaps give you away.
In Pro Tools, you can automate the EQ to cut jsut at the moment you want and then go back to normal. It's pretty easy and you won't have to use a different dialog track unless the bumps are quite noticeable.
If in the bump is in the clear, then past in some room tone.
Regards,
Ty Ford
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