Suppose there was a drug that could dramatically decrease mucus secretion. Which of the following may be a side effect of this drug?

A. Decreased mucus secretion would not affect a person's special senses.
B. Decreased mucus secretion would enhance a person's ability to smell due to less of a barrier between the odors and the olfactory organ.
C. Decreased mucus secretion would enhance a person's sense of taste due to the lack of mucus blocking access to the taste receptors.
D. Decreased mucus secretion would also decrease a person's ability to smell due to less fluid associated with the olfactory organ.

Decreased mucus secretion may also decrease a person's ability to smell due to less fluid associated with the olfactory organ. The thin layer of mucus in the nasal passages plays a crucial role in capturing odor molecules, aiding in the sense of smell.

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