It’s Good to Know: Fire Alarms for the Deaf

Fire alarms that alert you with a loud, blaring noise are obviously useless for deaf people. So a Japanese company has developed an alarm that sprays the scent of horseradish in the air when there is a fire. Tests conducted by researchers at Shiga University of Medical Science Hospital have shown that the spray is very effective in waking up sleeping subjects.

(Source: Boing Boing and WCTV)

Similar Articles:

• It’s Good to Know: A Cure for Jet Lag
• It’s Fun to Know: Wool Coffins
• It’s Fun to Know: High-Tech Tombstones
• It’s Good to Know: The Tourist Remover
• A Ban on Bad News