Removing fog in Vanilla/Sodium?
I have no idea what this means, but whatever game this is for, you'll need to ask in the forums for that specific game.
On every LB page, on the sidebar on the left-hand side of the screen, you'll find a link to the forums for that specific game. You'll need to discuss this question there as people who run the game will (presumably) know what you're talking about and can provide you assistance/answers.