Gather around boys and girls, we’re going to hear a frank and serious story about smelly farts, butts, underpants, and old people smell. More importantly, this story is about the man who may make all of these things extinct.
This story follows the creation of Inodore, a Japanese-made material that did something to stop not only fart smells, but a range of other body odors deemed “unpleasant” by society. This company has found a method to eliminate foul smells from the body without the use of any harmful chemicals or powerful perfumes.
Their clothing products currently on sale can trap and eliminate everyday body odors like sweat and gas by over 95%, 80% of which is erased in the first 30 seconds of contact.
Our story begins with Professor Hiroki Ohge of Hiroshima University who was studying how diseases can affect the smells of people’s farts. By analyzing a fart smell along with its key component, hydrogen sulfide, it could be possible to detect illnesses.
For example, conceivably, cancer could be detected by getting a butt smelled rather than getting a finger stuck up there.
While Prof. Ohge was studying in America he noticed that there were various cushions and shorts on sale that deodorize using activated carbon contained within. This type of carbon was like charcoal but had even more holes inside which could trap odor molecules as they passed through.
“It would be better if it wrapped tightly around the butt like underwear, then the smell wouldn’t escape through openings” thought the professor.
Upon returning to Japan Prof. Ohge shopped around the idea of a deodorizing fabric to 50 different textile companies. In the end, a manufacturer called Seiren in Tokyo showed interest and the two got down to work.
Activated carbon or charcoal wouldn’t be suitable because it was weak and could leave remnants eventually all falling out of the clothing. After some trial and error, ceramic material was chosen because it also had countless tiny pores but also was stronger and could hold up to wear and washing.
The ceramics used also contained metal ions which break down and eliminate the various odors emitted from the body. The ceramic material was reduced to nanoscopic particles and attached to the fibers of the underwear making them appear like regular garments.
With the fabric complete in 2008, Prof. Ohge and Seiren introduced it to the one place that would appreciate garments that killed unpleasant odors the most – a nursing home. The staff of the old age facilities responded favorably that this material indeed cut down the smell of feces considerably.
Pleased with the results they began developing further products for old age homes working on a variety of other odors like so-called “old people smell.” This distinct smell is simply a different form of body odor caused by a chemical called nonenal.
Despite its name, people of all ages can have this smell but it occurs in everyone usually after 40 years old. Although this is a completely different smell from farts, they were able to deal with it in the same way. According to Seiren Director Nobuyuki Imai, “by working with various combinations of ceramics we can deal with quite a wide range of odors.”
The material now marketed as Inodore has branched beyond special care facilities and smells into the corporate world with their Deoest line of clothing. Various undergarments have been developed to block embarrassing farts, awkward smelly feet, and career threatening pit stank.
Their goods have been well received by the public at large as well. One satisfied customer wrote on their website:
“Seeing it advertised on TV I thought I’d give it a try. I tried farting [in a pair of the underwear] as an experiment and I was truly shocked! The deodorant effect is outstanding!”
Prof. Ohge stresses the point that “many people are extra sensitive about their own smell. These products can help people to have more confidence.”
And so, we at RocketNews24 would like to salute the good professor for his hard work and Seiren for taking a chance on a revolutionary idea that may usher us all into a brave new odor free world – a world where we may all enjoy bean burritos without fear of persecution.
Source: Inodore via Mainichi Online (Japanese)
▼ A chart explaining how the fabric works, kind of.
▼ Our Savior, Professor Ohge



Briefs in Brief: Top Underwear Developments in Japan
Japanese teens develop anti-fart underwear that blocks smell and sound of flatulence
Scientists One Step Closer to Cure for Body Odor
Japanese cosmetic company discovers our “stress smell” is similar to a dead animal’s butt
10 times to avoid traveling in Japan in 2026
Ramen restaurant’s English menu prices are nearly double its Japanese ones, denies discriminating
We ate sushi made from Japan’s most expensive tuna ever【Taste test】
Here’s what our bachelor writers ate over the New Year’s holiday in Japan
This quiet forest cafe in Japan lets you read all day in the house of a famous author
What makes a good boss in Japan? Workers sound off in survey
We tried 12 different gummy candies from a Japanese supermarket and found the most delicious one
“Memory enhancing gum” now on sale in Japan
Starbucks Japan releases the new Soupuccino, but is it everything it’s cracked up to be?
A Fujoshi’s heaven on earth exists in Ikebukuro’s Boy’s Love Academy cafe
Japanese beef bowl chain Sukiya’s 2026 Smile Box lucky bag basically pays for itself
Starbucks Japan ready to get Year of the Horse started with adorable drinkware and plushies【Pics】
Hayao Miyazaki says Happy New Year to Studio Ghibli fans with new art for Year of the Horse
Cup Noodle tries an authentic Jiro-style ramen, but something’s not quite right
Top Japanese cosplayer Enako returns to Comiket after 6 years, creates mayhem with admirers
The best Starbucks Japan Frappuccinos we want to drink again in 2026
We revisited Sweets Paradise after a decade to see if Japan’s dessert buffet still delivers
That time Seiji called JASRAC to ask why he didn’t get paid royalties for his song being on TV
Pizza Hut Japan’s hot lucky bags are perfect for a New Year’s pizza party
Majority of Japanese mayors say foreign residents are essential but most see good and bad effects
7-Eleven Japan starts new temporary luggage storage service in over 300 branches
Disillusionment at Tsukiji’s tourist-target prices led us to a great ramen restaurant in Tokyo
Starbucks teams up with 166-year-old Kyoto doll maker for Year of the Horse decorations【Photos】
Tokyo considering law requiring more trash cans following litter increase in heavily touristed area
Tokyo’s Tsukiji sushi neighborhood asks tour groups to stay away for the rest of the month
Tokyo event lets you travel back in time, for free, to celebrate 100 years since Showa era start
Japan may add Japanese language proficiency, lifestyle classes to permanent foreign resident requirements
Sanrio theme park in Japan announces plans to expand into a Sanrio resort
Lacquerware supplier to emperor of Japan and Pokémon team up for new tableware
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Japan’s deadliest food claims more victims, but why do people keep eating it for New Year’s?
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says
Starbucks Japan reveals new sakura drinkware collection, inspired by evening cherry blossoms
Updated cherry blossom forecast shows extra-long sakura season for Japan this year
Leave a Reply