Do any of these scenarios sound familiar?
You catch a whiff of a co-worker's new fragrance, and within minutes, you
have a whopper of a headache.
You pop open that new bottle of dish-washing liquid, and by the time you've
washed the pots and pans, your hands and arms are covered in hives.
You walk into a friend's home and smell freshly baked pumpkin pie. Only
after you start sneezing uncontrollably and feeling dizzy, weak, and sick to
your stomach do you learn she hasn't been baking...