Oh, I think I see it. There’s a little tick at about 5 seconds (there may be more). That’s not a logical place for a lip smack, I don’t think, so the computer may be doing that. That could be fun. Hope for lip smacks. Those are relatively easy to deal with.
Trying to cure data errors in the computer can be really entertaining.
There is an up side. ACX rarely rejects submissions because or human noises. Breathing typically goes straight through. This may be a good time for a test submission.
https://forum.audacityteam.org/t/how-to-send-a-test-to-acx/49588/1
Koz