Hygienic

That doesn't seem very hygienic.

Economics play a large rôle in human affairs. Sometimes, money controls people's behaviour. An interesting speculative fiction movie is THX 1138. It is about the future in which credit flow and balances are carefully checked by a centralized computer. Everybody has a shaven head. Most wear white. The religion seems like a Buddhist-Catholic hybrid. The city is hygienic white and is subterranean. The huge city is like a clean hospital and a shopping mall. George Lucas, the filmmaker of THX 1138, also later made the more famous Star Wars. He has proclaimed his religion as Buddhist Methodist, according to Wikipedia.

In cats, grooming has hygienic benefits.

It's not very hygienic to use your hands.

Keep your tortoise's environment clean and hygienic.

Never leave the toilet unflushed, it's not hygienic.

Taking care of kitchen towels ensures they stay hygienic and ready for use in your daily kitchen activities.

Of course, anyone with a Scheme background is probably howling at this point because they have a hygienic macro system that makes unintended variable capture impossible. Allowing variable capture when we really, really want it makes Clojure's macro system technically more dangerous than hygienic systems.