Dog’s have a sense of smell approximately 10,000 – 100,000 times more sensitive than ours. A recent episode of NOVA went in to detail about just how acute these canine molecular detectors can be. Dogs are now helping to detect cancer as well.
This all makes sense when you look at things on a molecular scale. In some ways, our bodies are like the car you take to the emission inspection. The health of your body, like your car’s engine, can be assessed by it’s emissions. When it comes to reproduction, “health”, can be a relative term. Certain individuals mate more healthily with some, than with others. Human pheromones are said to communicate this information between prospective lovers.
It stands to reason, if a dog can smell illnesses like cancer, it can smell human pheromones. Given the right training, it may be possible to ask a dog to sniff out your best reproductive partner from a crowd. Of course ideal genetic compatibility probably does not ensure emotional compatibility…but who knows..maybe it does.