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.
The thing I care about is my weight - I'm as fanatical about it as a member of Girls Aloud. I weigh myself every morning. I know exactly what I want to be - 82kg - and I try to stick to it.
