The day in 2004 when the radiologist told me I had invasive cancer I walked down the hospital corridor looking for a phone to call my husband and I could almost see the fear coming toward me like a big black shadow.
What they smell isn't the emotion of fear. What dogs can smell is the changes in a person's skin that suggest fear to the dog anxiety the way your skin sweats the amount of uric acid that suddenly pours out of your pores.
