Ok....like i said we'll just have to agree to disagree on this one.
You are right. I saw one demonstration with a police drug search dog. They had placed a very small amount of marijuana in a sealed glass jar. They then wrapped it in saran wrap covered in Vic's Vapor Rub. They repeated this process over a dozen times - wrapping it over and over again - and placed it with several other containers. They then brought in the dog and it found the weed rather quickly.