dont know how much this would help, these areee the options for mount which you can use:
A private mount carries no propagation abilities:
mount --make-private mountpoint
A unbindable mount is a private mount which cannot cloned through a bind operation.
mount --make-unbindable mountpoint
The following commands allows one to recursively change the type of all the mounts under a given mountpoint.
mount --make-rprivate mountpoint
mount --make-runbindable mountpoint
you can use all the commands in the terminal. For more help go to man page of mount.