Breath contains distinct scents and volatile biomarkers that can help detect several diseases. In fact, dogs are known to detect low blood glucose levels, seizures activity in brain and cancers, by sniffing a person's breath. Giant rats in Africa are known to have the ability to smell tuberculosis infection.
Can you believe the practice of using breath to diagnose disease dates back to the time of Hippocrates around 400 BC? An astute physician can diagnose several medical conditions by noting the type of breathing and odor associated with a person's breath.