in the event anyone pulls out a bladed object for "self-defence",
it's almost a certainty that things could escalate into a bloody mess.
especially when there is desperation in the air.
following which if things are investigated in post-event,
it only complicates legal matters should a said object for all intent and purpose,
fits the descriptive bill of a "murderous-looking" weapon.
having said that, a kitchen is already an open armoury.
you need only to weaponize for an upgrade.
besides, working in a kitchen,
it would be reasonable argument to be able to have in one's possession a kitchen worktool, any time or day given the described professional occupational circumstance...like deciding to bring it home for use.