When muting... you do have to be precise... I find that with the lip smacks of a singer opening their mouth, and then taking that breath in preparation to sing the next phrase.....
If you zoom in, there is a definite wave blob for each sound AND there is space between the sound and the words...(zoom in far enough to clearly see that space and be able to get into it easily to click in there)...... if you select your mute into that silence area, starting well before the noise and ending in the center of the silence, the mute is flawless and will not interfere with the natural sound of the beginning of the singer's phrase.
Of course.... you always check it. I start my playback in the center of the last phrase and play through my mute edit to be sure I didn't trim anything important. There is always UNDO. But 99% of the time, I got the edit perfect and click save and move to the next noise that needs muting.
I normally do this sort of "cleanup editing" at the very end or nearly so, of the process. AND, I mute everything except the track I'm working on and one acoustic guitar track for reference. It's sometimes easier to solo the 2 tracks rather than mute everything else. But the whole point is to hear clearly, what you are working on.