Destruction procedural mesh in the editor

I currently create procedural mesh in the editor like that:

 meshFilter.mesh = Create()

If I call that multiple time and save. I have this error:

Cleaning up leaked objects in scene since no game object, component or manager is referencing them Mesh ProceduralPlane has been leaked X times

If I try to destroy it, I have this error:

Instantiating mesh due to calling MeshFilter.mesh during edit mode. This will leak meshes. Please use MeshFilter.sharedMesh instead.

And I can't use sharedMesh since all my meshes on my objects are unique and I don't want them to be instantied when I duplicate them

So my question is what is the good way to destroy mesh without leak in the editor?