Question

Why can you not taste food properly when you have a cold?

Answer 1

Hint: In our body, every part has a connection with another body part via nerves, blood vessels, and different types of body fluid. If one part of the body gets to affect it results in a minor change in other parts also.

Complete answer:
Taste has a relation with the smell if we cannot smell food properly then we cannot get a complete taste of food. In a cold nose get blocked due to the accumulation of mucus by which one cannot be able to take the smell of food due to this the food tastes tasteless after eating.

Additional Information: Fever also affects the taste bud, in case of fever body temperature rises up which affects the oral cavity. Fever also leads to dehydration because of this the moisture content of the mouth decreases and results in an alter the taste of food. To fix a sense of taste it is recommended to increase the uptake of fluid with vitamin C.
We have five different types of taste buds, sweet, salty, bitter, sour, and umami. Umami refers to the taste of meat. The papillae in our tongue consist of taste buds. There are four different types of papillae present with different shapes and sizes. When the taste bud receptor receives any type of chemical then it leads to the conduction of impulse toward the brain.

Note: Scientists have put a lot of effort into knowing how the consistency of the food is also important for food preference. Rheology is the process of food movement and tribology is the process of tongue lubrication via fats and oils.