Researchers develop fire alarm that sprays smell of horseradish

Japanese researchers have developed a fire alarm that sprays the strong smell of horseradish, just in case you can’t hear the noise.

The alarm is suited towards deaf people who will now know with the rest of us when there’s a fire in the house. It will probably be a help to the heavy sleepers as well.

In tests, the alarm was able to wake up 13 out of 14 people without making any noise at all, with deaf subjects much more receptive to the smell.

Those clever Japanese are always coming up with ingenious solutions, and this is another one of them. This alarm would surely be a great help to society, keeping deaf (and sleepy) people much safer. The only thing is… would people really have to change the horseradish substance in the alarm every time it goes off?