Volatile biomarkers play a significant signalling role in communication between biological cells living as individual entities or as mini-societies that sense, respond and adapt to changes in their environment. In this process, volatile biomarkers can leak into the blood, from which they can be secreted into most body fluids (blood, breath, skin, urine, saliva, feces, etc.), from which sensing devices can capture and interpret their chemical fingerprint to reflect any association with health disorders in a fast, easy, and minimally non-invasive manner. This book introduces the concept of...