Hey guys, Bloodhounds used for tracking purposes pick up scent left on the ground and moving in the air. What they are smelling is the skin cells shed with normal movement that are deposited upon the ground and in the air. My theory is like this. Seal off as much of your body to the open air by buttoning up shirts to the top button a tight fitting under layerwith everything overlapping. This starts with base layer bottoms into socks, base layer top into wasteband of bottoms and again the same with outer layers. Of course we should always start with a clean body which is cleaned with scent free soaps and deodarant. Body odor is controlable but the shedding of old skin goes on constantly in our daily activities. This system has always worked for me weather I'm wearing wool or some synthetic material. Of course this is only in theory