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This small nucleus contains almost half of all the brain neurons that use norepinephrine as a neurotransmitter. The locus coeruleus also projects its axons to those parts of the brain that may be associated with panic disorders (the amygdala, hippocampus, septum, cortex, brainstem, reticular formation, etc). Stimulating an animal's locus coeruleus, like stimulating its amygdala, produces anxiety behaviours.
Anxiety is a condition that affects your hormones, your neurotransmitters, and your immune system. Every part of your body is affected, which is why it's not much of a surprise that anxiety can affect your nose as well. Take my anxiety test to learn more about some of the causes and symptoms of your anxiety.