Settings > Audio
Disable all the devices.
If you have set all audio devices in Settings > Audio to disabled, then you have an explicit audio source defined in one of your scenes. Delete it.
Wiki - Sources Guide | OBS
This page has moved to https://obsproject.com/kb/sources-guide.obsproject.com
Audio can be configured in Settings > Audio. Audio devices listed there occur in all scenes.
Audio sources can be added individually to scenes in the same way you add a desktop, window, game, or camera source to a scene, and from the same menu. These audio sources appear ONLY in the scenes you explicitly add them to, rather than all of them-- hence the term "explicit audio source".
I struggled with this too and figured out an easy fix. Just hover over the speaker symbol in the Mic/Aux volume line (in the Audio Mixer window) and click on it. The speaker symbol will turn red with an “X” next to it. The mic will no longer add your voice to the recorded video. Hope that helps!Hi. I'm new to this and this is my first post.
I have figured out how to stream using OBS using VLC, but when I do, my voice and other sounds are coming through on the stream. How do I fix this so this doesn't happen? Thanks for your help!