Do you not need any audio from the clip you’re about to export, or are you planning to have the original audio very low in the background, as this exported clip is used in another editing project somewhere?
If you don’t want to export ANY audio, you could delete the audio track before rendering, or choose to export only the video. Exporting a muted track just takes up a little bit more space, but the muting can’t be undone later if that suddenly and unexpectedly becomes necessary. Since the next person to work with the exported project will have the ability to fine-tune audio, perhaps you should just leave it full on as-is for your export, if there is ANY chance the audio will be used later in some capacity.