how I can make the mesh invisible and keep the fire? how I can make the mesh invisible and keep the fire ?
If your mesh is one piece, and you don't want to work destructively,just go in the edit mode and select the unrequired vertices and hit H on keyboard to hide it
You can unhide it by alt+H
If your mesh in seperate,just click on eye button in the outlined
If you want your mesh to be seperate,select the unrequired vertices and press P to seperate it as other mesh