Scientists Create Device That Sends Smells Over Internet

Scientists just took a major step toward making the internet smell as good as it looks.

Researchers at Ohio State University have created a device that can send real scents over the internet using artificial intelligence. The system, called Scentronic, can already transmit five different smells including orange, coffee, cake, beer, and red wine.

Here's how it works. An electronic nose uses special sensors to detect smell molecules in the air. When substances like limonene from citrus or ethanol from beer touch the sensors, they create unique electrical signals. AI software then reads these signals and sends the information through the internet.

On the receiving end, a small device contains tiny containers of scented liquids. When it gets the signal, vibrating atomizers release fine droplets into the air to recreate the smell. The team built several prototypes including a handheld version, a necklace, and even a wristband.

Lead researcher Chunyu Yang tested the handheld device with 14 volunteers who correctly identified the transmitted smells 73% of the time. That success rate came after hundreds of training sessions to teach the AI to recognize each scent accurately.

The breakthrough solves a challenge that has stumped scientists for years. Unlike vision, which breaks down into simple pixels of red, green, and blue, smell involves complex combinations of very different molecules. There's no simple building block for scent.

The Ripple Effect

The applications stretch far beyond novelty. Entertainment companies could use the technology to create truly immersive virtual reality experiences where you smell a pine forest while exploring a digital landscape.

The health sector sees promise too. Astronauts and soldiers eating bland rations could enjoy meals that smell like home cooking. Doctors could better diagnose patients with smell distortions from conditions like Parkinson's disease or long COVID.

Yang even built a prototype that reproduces taste by dropping flavored liquids into a cup of water using electromagnetic pumps. The system works faster and more practically than previous attempts that used heated wax or direct neural stimulation.

The team plans to expand beyond five scents to create more complex aromas. While experts note there's still a long road ahead before we can record and replay smell as easily as sound or video, this marks real progress on what's been our most neglected sense.

One day soon, you might not just see photos of your friend's homemade bread, you'll smell it baking from a thousand miles away.