This may help....errrrr....answer your question.....

http://www.cnn.com/2009/HEALTH/08/14...ney/index.html

I especially like this part: "Some of the dollars in his experiment had .006 micrograms, which is several thousands of times smaller than a single grain of sand."

If a drug puppy can alert on that then, they're the nose of the century!

And! It's what the fish do in the water that the p-bears pick up on. But I'm no ocean biology expert.

BUT, I did not stay at a Holiday Inn Express last nite!