02/18/2026
👀 Check this out!
This Facebook post highlights fascinating (and important!) research about something most of us use without a second thought — public restroom hand dryers.
Did you know some automated hand dryers have been measured at levels over 100 dBA at a child’s ear height? 🚨 Children’s ears are more sensitive to loud sounds, and repeated exposure at high decibel levels can increase the risk of noise-related hearing damage.
A peer-reviewed study took real-world measurements in public restrooms to see how safe these dryers really are for kids. The results may surprise you 👉 https://pmc.ncbi.nlm.nih.gov/articles/PMC7286728/
If your child ever says, “That hurts my ears,” it’s worth listening. 👂💙 Protecting hearing early makes a lifelong difference. Have questions about your child’s hearing or concerns about noise exposure? Let’s talk!
📞 (717) 925-8874
"She was 9 when she noticed kids covering their ears in bathrooms. At 13, she proved they were right—in a medical journal."
Nora Keegan from Calgary noticed something adults kept ignoring.
In fourth grade, she watched children rush out of public restrooms with their hands clamped over their ears. She felt it herself—after using hand dryers, her ears would ring for minutes.
Adults said it was fine. "They're just loud."
But Nora wondered: What if they're not just loud—what if they're dangerous?
So in fifth grade, she turned her observation into a science experiment. She convinced her parents (both doctors) to drive her to 44 public bathrooms across Alberta. She brought a professional decibel meter, a ruler, and a hypothesis: hand dryers hurt children's ears because children stand closer to the sound source.
For two years, she took measurements. 880 of them. Different heights. Different distances. Hands in the airstream, hands out. She measured at adult ear level. Then at children's ear level.
The results stunned her.
Xlerator dryers measured over 100 decibels—every single one. Several Dyson Airblade models hit 105 decibels at a 3-year-old's height. The loudest? A Dyson at 121 decibels—as loud as an ambulance siren.
Here's what makes this terrifying: Health Canada prohibits children's toys from exceeding 100 decibels because they know it damages hearing. Yet hand dryers in public spaces where children go daily—libraries, schools, restaurants—were routinely blasting sounds that could cause learning disabilities, attention difficulties, and ruptured eardrums.
Manufacturers claimed their dryers operated at 70-80 decibels. Nora's real-world testing proved otherwise—many were operating at levels four times louder than advertised.
In seventh grade, she didn't stop at exposing the problem. She started building a solution—a synthetic air filter prototype that could reduce the noise by 11 decibels.
Then she wrote a scientific paper. She submitted it to a journal. They rejected it.
She revised. She resubmitted.
In June 2019, Paediatrics & Child Health—Canada's premier peer-reviewed pediatric journal—published her study. The title? "Children who say hand dryers 'hurt my ears' are correct."
She was 13 years old.
Dyson responded by inviting her to meet with their acoustic engineers. Health officials took notice. Nora's research is now cited by the National Institutes of Health and used to educate parents worldwide.
All because a 9-year-old believed children when they said something hurt.
The next time a child tells you something's wrong, maybe—just maybe—you should listen.
