Definitions for "Hygienic"
Of or pertaining to health or hygiene; sanitary.
Of, or pertaining to, equipment and piping systems that by design, materials of construction, and operation provide for the maintenance of cleanliness (pyrogen free but not sterile) so that products produced by these systems will not adversely affect human or animal health.
tending to promote or preserve health; "hygienic habits like using disposable tissues"; "hygienic surroundings with plenty of fresh air"
It is an element necessary for a situation but which has no added value.