Question

We can't smell while suffering from common cold, why?

Answer 1

Post-nasal drip is normally caused by an illness such as the cold, a flu virusor nasal allergies. All of these can wipe the flavor from tasty foods. ... Both tastes and smells are the perception of chemicals in the air or in the food we eat. But don't blame your taste buds for the loss of flavor.

Answer 2

Because when we suffer from cold , our nose gets blocked thus allowing us not to smell.
Hope it helps