Oh, I am terribly sorry, I failed to post which game this was about.
It is L4D2.
If I enable sv_cheats 1, clients can also use cheats like noclip, respawn, etc.
I actually made a separate thread abou this here, relating it in detail:
https://forums.alliedmods.net/showth...35#post2782135
In essence, I am trying to use cheats alone - so no one else can do it, but me, the admin/host.