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Chemical Sniffer Machine Detects Bombs and Illegal Drugs


Chemical Sniffer Machine Detects Bombs and Illegal Drugs
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Dogs are often used in airports to sniff out explosives or illegal drugs. But a high-tech machine has been developed that can "sniff" the air, so baggage handlers and bomb experts can check luggage and containers without touching them. VOA's Deborah Block has more.

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