1º_ It is said of what has no smell. From the Latin in- ( "negation, deprivation") odor , oris ( "smell, aroma" ). 2º_ By the above, it is called so the bathroom artifact that is used especially to remove human organic waste. This has a siphon and ventilation system that prevents the return of bad odors.
It's another way to call a toilet. Bathroom, toilet, water, latrine, toilet, toilet, sink, toilet.