Despite how they look they are only a year old. Apparently diesel eats leather. But my main concern is the fact that every time I take them off the smell punches my nostrils right in the hairs. It's a smell of sweaty feet, car fluids, and month old trash. It's the kind of smell that makes you do the thing that Fry (Futurama) does when he smells the garbage ball with the smell-o-scope. Any advice is appreciated.