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In an innovative solution to the problem of deaf people not being able to hear fire alarms, Japanese researchers have developed a spray that the strong smell of horseradish, ensuring that everyone with a functioning sense of smell wakes up. In trials, successfully woke up in silence 13 of the 14 individuals with deaf issues much more receptive to the alarm.

In trials, successfully woke up in silence 13 of the 14 individuals with deaf issues much more receptive to the alarm. Combine this with an audible alarm and a small robot that goes around slapping people on the face and that you had received an infallible fire alarm. Wait a minute. If horseradish can smell, but also can not smell the fire? [WCTV through Boing Boing].

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