Smell alarm
March 13th, 2008 by rbanks
Safety: Japan Develops a Fire Alarm that Sprays the Smell of Horseradish
“In an innovative solution to the problem of deaf people not being able to hear fire alarms, Japanese researchers have developed one that sprays the strong smell of horseradish, ensuring that everybody with a functioning sense of smell wakes up. In tests, it successfully, silently woke up 13 out of 14 people, with deaf subjects much more receptive to the alarm.”
Gizmodo
