When You Sniff the Air to Detect or Identify Odors

When you sniff the air to detect or identify odors, you are

A) increasing the osmotic pressure on the olfactory mechanoreceptors.
B) forcing air to the back of the throat toward the olfactory nerves.
C) forcing air to the top of the nasal cavity where olfactory chemoreceptors are located.
D) forcing gases into solution.
E) reducing adaptation of the olfactory sense.