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Disturbing video shows what really happens if you don't close your toilet lid before flushing

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Updated 13:12 28 Feb 2025 GMTPublished 13:08 28 Feb 2025 GMT

Disturbing video shows what really happens if you don't close your toilet lid before flushing

This will make you think twice in the bathroom...

Gerrard Kaonga

Gerrard Kaonga

This video will be on your mind next time you flush the toilet and there is no doubt you are going to be changing how you behave.

Germs are basically everywhere, all the time and trying to get inside you. Yup, there is no escape, but thankfully your immune system gets to work and stops germs from doing any serious damage and keeps you in good health.

With that said, even if there aren't exactly any noticeable impacts from these germs, knowing they are getting in your mouth, hands, eyes is still a bit gross.

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And this video of what happens when you flush the toilet without closing the lid will definitely make you shudder.

The video from Science X: Phys.org, Medical Xpress, Tech Xplore on YouTube shows exactly what happens and you will likely ALWAYS be closing the lid from now on.

Funnily enough, there has been research done into this elsewhere in the scientific community.

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The TikTok page, DIYMAN_PRO, did a more in depth experiment showing just how many germs escape when you flush.

The researcher behind it places a green laser on the toilet seat and records the moment the toilet is flushed and the thousands of germs from the water breaking through the laser.

In a second experiment they pour a neon liquid directly into the toilet tank, waits for it to mix and then again presses the flusher which shows just how far the 'poo particles' can reach by using a black light to uncover this.

I'm never using a toilet again (Science X)
I'm never using a toilet again (Science X)

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The ultraviolet light showed that germs manage to escape from the toilet and onto almost everything around it - including toothbrushes!

But wait... there's more.

John Crimaldi, who in 2022 was a professor of engineering at the University of Colorado, undertook a similar study.

He told Business Insider the team’s ‘jaw dropped’ when they first saw the experiment as he had ‘no idea and no reason to believe’ they would carry as high and as wide as they did.

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Writing in the study, which was published here, the researchers noted: “Our results demonstrate the surprisingly energetic and rapid growth of aerosol plumes from a commercial toilet and highlight the chaotic nature of the fluid kinematics that transport the particles.”

Germs from the toilet are seen flying out of the loo when it is flushed. (TikTok/DIYMAN_PRO)
Germs from the toilet are seen flying out of the loo when it is flushed. (TikTok/DIYMAN_PRO)

Crimaldi said his footage could change people’s perceptions of traditional toilets, and says he’s already started looking at them ‘suspiciously now’.

He told the publication: "You go to the bathroom, you flush the handle, the stuff disappears, you're like: 'boom, works great!'

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"Then you look at the videos that we took and you're like: 'oh, maybe not so great!'

"I can tell you this has fundamentally changed my relationship with toilets. I look at them suspiciously now."

Featured Image Credit: TikTok/DIYMAN_PRO / Getty Stock Images

Topics: Health

Gerrard Kaonga
Gerrard Kaonga

Gerrard is a Journalist at UNILAD and has dived headfirst into covering everything from breaking global stories to trending entertainment news. He has a bachelors in English Literature from Brunel University and has written across a number of different national and international publications. Most notably the Financial Times, Daily Express, Evening Standard and Newsweek.

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