Your flush doesn’t stay in the toilet.

Your flush doesn’t stay in the toilet.

In one study, engineers lit up a flushing toilet with lasers to film the spray. The flush shot out a jet of air faster than 2 meters per second, and it carried tiny droplets about 1.5 meters (5 feet) up within 8 seconds. A minute later, the air above the toilet still held more tiny particles than before the flush.

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