this post was submitted on 19 Aug 2023
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There was a peer-reviewed report published in the journal for Applied and Environmental Microbiology that studied the amount of bacteria that was blown from hand dryers in 36 public restrooms at the University of Connecticut School of Medicine. The sample from the study concluded that as many as 60 colonies of bacteria were blown from a hand dryer in just 30-seconds. A number of those bacteria were linked to fecal and human bacteria, even bacteria known to cause serious infections.

Why YSK: So that you are informed for your own health, hygiene, and wellness and to prevent further spread of more harmful bacteria.

Citation & Sources: "Deposition of Bacteria and Bacterial Spores by Bathroom Hot-Air Hand Dryers" (April 2018), Applied and Environmental Microbiology

https://journals.asm.org/doi/10.1128/AEM.00044-18

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[–] EnderWi99in@kbin.social 131 points 1 year ago (7 children)

Paid for by the paper towel industry which was in response to the hand dryer industry putting out it's own paid study about how paper towels just spread fecal matter around your hands. It's all shit no matter how you spread it.

[–] baruchin@lemmy.world 16 points 1 year ago

This comment is the shit. It made me lol.

[–] eee@lemm.ee 9 points 1 year ago

yeah ther's so much paid propaganda around paper vs dryer that I don't know what to believe anymore.

i personally prefer paper, only because it's usually faster for me.

[–] maniel@lemmy.ml 8 points 1 year ago

Yeah, what a shit show

[–] HeroHelck@lemm.ee 5 points 1 year ago

It makes me deeply uncomfortable to entertain the thought that "the paper towel industry" is an entity out to manipulate me.

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[–] BlueLineBae@midwest.social 84 points 1 year ago (1 children)

I can't remember where I saw this so take it with a grain of salt... But I remember that the set of studies to come out on the sanitary condition of air dryers was funded by the paper towel industry. Not that the studies aren't correct or anything, but I do think that it's something to consider.

[–] chaogomu@kbin.social 74 points 1 year ago (1 children)

Yup, the air blower companies have also funded anti-paper towel studies. It's somewhat funny.

https://www.theguardian.com/society/2019/apr/25/hand-dryers-paper-towels-hygiene-dyson-airblade

[–] Nobilmantis@feddit.it 8 points 1 year ago

That was a very interesting read, thank you!

[–] CobblerScholar@lemmy.world 66 points 1 year ago (2 children)

You should also know that when they test for fecal matter they aren't looking for actual pieces of poo they are looking for bacteria that are present in poo. You will find those bacteria just about everywhere

[–] INHALE_VEGETABLES@aussie.zone 20 points 1 year ago (2 children)

I heard once that the only way to stay properly clean is to cover yourself in mountain dew.

[–] macrocephalic@lemmy.world 5 points 1 year ago (2 children)

I heard you can commit crime and then wash away your DNA with Dew

[–] INHALE_VEGETABLES@aussie.zone 3 points 1 year ago

I hear in parts of Europe you can get war crime grade mountain dew if you know the right people.

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[–] PopShark@lemmy.world 3 points 1 year ago

Mtn dew code red definitely cleaned out my colon

[–] Hackerman_uwu@lemmy.world 4 points 1 year ago

It all comes back to poo.

[–] CmdrShepard@lemmy.one 41 points 1 year ago (1 children)

I'm pretty sure that regardless of where you are or what you're doing, fecal matter is getting blown on your hands. Mythbusters tested this out once by putting tooth brushes all over their shop and then culturing the bacteria from them. IIRC the ones that were in the bathroom had the least amount of fecal matter.

[–] PorkTaco@sh.itjust.works 3 points 1 year ago

The thing I remember is that even the control toothbrush that got opened and immediately locked away had fecal bacteria on it.

[–] TigrisMorte@kbin.social 28 points 1 year ago (5 children)

If the blower is blowing fecal matter then it would also be settling all over the paper towels. Issue is placement not anything to do with the blowers.

[–] over_clox@lemmy.world 16 points 1 year ago (2 children)

Almost every public restroom I've ever been in has the paper towels and toilet paper locked in a closed dispenser unit.

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[–] ericisshort@lemmy.world 5 points 1 year ago

Luckily paper towels are stacked though, so I’ll just avoid wiping my hands with the folds.

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[–] BradleyUffner@lemmy.world 27 points 1 year ago (1 children)

Literally everything in the restroom is covered in that... Including the air you breathe. Enjoy!

[–] Peppycito@sh.itjust.works 24 points 1 year ago (3 children)

Smell is particulate. You can smell the last guys poo because little pieces of it are landing in your nostrils.

[–] PopShark@lemmy.world 7 points 1 year ago (1 children)
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[–] ttmrichter@lemmy.world 4 points 1 year ago (1 children)

You're smelling mostly the scatole. That's the primary contributor to the smell of faeces.

Scatole is used in making perfumes, incidentally. And vanilla ice cream.

[–] Senex@reddthat.com 2 points 1 year ago

Welcome to Scatoles. I recommend our Pasta Crappini with homemade Feces Bread. Ciao!

[–] TheKracken@lemmy.world 3 points 1 year ago

I thought it was mostly the gaseous molecules some of the bacteria on poo emits that's landing in your nose, not the poo itself.

[–] Loulou@lemmy.mindoki.com 23 points 1 year ago (1 children)

It's not easy to convey important information when it comes to biology IMO.

Yeah we breath in fart and poop "particles" all the time, and a whole bunch of other stuff.

I don't know about the idea that every time you take a breath you inspire some molecules from when Ceasar said "et tu mon Brutus", or any other inspiring phrase, but also from one of Hitlers farts.

Molecules are small, really small and there are really many of them.

Our immune system works really hard, crazily hard even, and it's not a simple mechanism (we basically don't know how it works) but if you want to know if a fan blowing air or towel or a one usage towel is good or bad (or obviously how they influence our wellbeing) you have to do a real study. By scientists, and not by news looking "journalists".

BTW fact of the day to throw you off: there are somewhere around 600.000 cells that divide in an adult human body every:

.

.

.

.

.

.

.

.

.

. .

second.

Cheers

[–] BackOnMyBS@lemmy.world 14 points 1 year ago (3 children)

Today, we are all ships of Theseus 🫡

[–] Loulou@lemmy.mindoki.com 3 points 1 year ago

Well yes, but no.jpg

The heart is extremely bad at regenerating, classic muscles the opposite for example.

Then let's not get started on consciousness and memories plus our physical body, which is who we are today (or 'now')...

So somehow yes.

And good night I'm off to sleep !

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[–] dan1101@lemm.ee 22 points 1 year ago (7 children)

Yeah if there is nothing but blowers I just wipe my hands on my pants. If the blowers could somehow bring in outside air that should be better, but that complicates the install and maintainence.

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[–] Hotdogman@lemmy.world 18 points 1 year ago (2 children)

... And a large portion of dust is dead skin cells. Also, during the springtime trees straight up bukake your face and lungs.

[–] BackOnMyBS@lemmy.world 5 points 1 year ago (1 children)

me during springtime: 🤤

[–] macrocephalic@lemmy.world 4 points 1 year ago

Me during spring time 😭

[–] marcos@lemmy.world 10 points 1 year ago

Well, it's from your (and other people's) hands, onto everywhere.

Still, AFAIK it's not clear if this is a problem.

[–] Osirus@sh.itjust.works 9 points 1 year ago (8 children)

Only wash my hands and flush the toilet in public restrooms that have touch less sinks. If the toilet isn't automatic, I use my foot. Use the paper towel you wash your hands with to open the door on the way out or your sleeve if you have long sleeves on, or your elbow if it's a push door. I'd rather have my own dick on my hands than my own and everyone else's.

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[–] I_Miss_Daniel@kbin.social 7 points 1 year ago

I don't care about that. What's worse for me is that the Dyson ones are so damn loud. It's a pain having to hold one arm over your head in the stall to cover both ears.

[–] OutlierBlue@lemmy.ca 7 points 1 year ago* (last edited 1 year ago) (2 children)

Just do what I do and wipe your hands on your pants because those blow dryers are virtually worthless. I'd have better luck blowing on my hands myself.

Bonus: My pants aren't covered in fecal mist... I hope.

[–] macrocephalic@lemmy.world 4 points 1 year ago

Narrator voice: "They were"

Basically everything is covered in fecal matter of you look well enough, and it doesn't really matter. It's really good for selling disinfectant though!

[–] kindenough@kbin.social 4 points 1 year ago

Fecal Mist, great name for the new Enigma album.

[–] Kobrah@kbin.social 6 points 1 year ago

Well I have to touch the door on the way out any way so it really doesn’t matter that much.

[–] Daqu@feddit.de 5 points 1 year ago

Still cleaner than the doorknob. I hate opening a restroom door. The stuff I touch going in will land on my genitals, on the way out everywhere else, like my face and food.

[–] Shortstack@reddthat.com 2 points 1 year ago

God I never gave that a second thought but they're right, its just sucking in and blowing farts onto my clean hands

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