Clever / toilet

There exist about from 5 hundred thousand to 6 hundred thousand bacteria in human excreta
because virus, living bacteria, the bodies of bacterium is included in it.
It occurs bubbles on the topside like some thin bubble screens flushing the toilet and bubbles clinging bacteria is so light that they fly in the air above 6m, clinging about from 5 billion to 10 billion bacteria in the minute waterdrop. These bacilli can easily cause diseases to the old, weak people and children.

"Clever" is a system closing the toilet bowl cover when you pushed the lever.
This system protects the spreading of germ with the flushing the toilet.