Morrie has had a cold for five days, and his nose is so stuffy that he cannot smell anything. When he goes to drink your coffee, he finds that it is tasteless. What is the MOST likely reason for this

To savor a taste, we need to breathe the aroma through our nose.

Explanation:

Morrie having no sense of taste from his coffee is due to the fact that he has a stuffy nose. This is because, there is a connection and a relationship between the senses of taste and smell, they employ the same types of receptors and are stimulated by molecules in solutions or air. Most often they assume taste and smell to be senses apart, they work together to create the perception of flavor/taste. A person's ability to perceive a flavor is most times not even there and if they have congested nasal passages the meaning of that is one's sense of smell is not functional, then his sense of taste will be nonfunctional because of the relationship of the receptors in the nose and taste buds

To taste the coffee, his nose has to inhale the aroma.