CHQ: SUBJECT: Heightened Sense of Smell
  MESSAGE: Is there any information on heightened sensitivity to smells?
  I have difficulty smelling fragrances and chemicals especially cleaning chemicals. I sometimes have distorted smells or smells that aren't  there. It started over 6 years ago with a weird smell in my nose for days.
Summary: Where can I find information about heighted or distorted sense of smell? 