Your next smoke alarm could alert you to trouble by sending off a strong odor. Researchers at Japan’ Shiga University of Medical Science Hospital say their research shows the smell of horseradish can usually wake people from the deepest sleep and they say it is especially effective in waking up people who are impaired people. The equipment seals the odor inside a can and sprays them out when triggered by smoke. The product could be on the market in two years.
