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Author Topic: How can a sniffer dog detect plastic-wrapped contraband?  (Read 2061 times)

Richard Townsend

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Richard Townsend  asked the Naked Scientists:
   
Hi Chris,

I saw a TV programme about sniffer dogs and how they can smell contraband through 2 layers of plastic.How does this work? Is it molecular, atomic or quantum action that allows something to migrate through the plastic?

Richard Townsend

What do you think?


 

Offline LeeE

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How can a sniffer dog detect plastic-wrapped contraband?
« Reply #1 on: 20/07/2009 19:52:00 »
If the packaging is airtight I suspect it's through contamination of the outside of the wrapping.  Obviously, if the wrapping is not airtight then some of the molecules can simply escape to the air.
 

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How can a sniffer dog detect plastic-wrapped contraband?
« Reply #1 on: 20/07/2009 19:52:00 »

 

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