1. Ointment
  2. Water birds
  3. Canned corn
    This will make me nauseous for days
  4. Rotting greens in the fridge
  5. Fridges in general, for that matter
  6. A bag of fried chicken on a bus
  7. Mildew on laundry you left in the washer too long
  8. The smell of garlic trapped in your nose-- you can't STOP smelling it
  9. An uncircumcised penis that hasn't been cleaned well
  10. Hominy ...if you haven't smelled it yet, I hope you never have to.
    Suggested by @andlamb