I have never heard of that but I do know that you can put vicks on a female that is in heat and it will block the scent so you can hunt her with males and they will leave her alone.
Doesnt work. A dog's nose has the ability to pick apart scents. When people smuggle dope they try masking it with different cover scents i.e. grease, mustard, soap. A dog is able to work past the strongest odor and work other odors mixed in. I was given the example if you smell a hamburger a dog can smell the meat, cheese, bread, lettuce, and tomato.
