Sweet, Salty, Sour, and Bitter are the four variations of taste. Combine that with the olfactory gland in the nose and you can perceive many more variations of the senses. But ... not with a cold or allergy or dry tongue and sinuses. Lots of people complain about loss of taste when vaping and the chief cause is usually dehydration of the mouth and sinuses. It comes and goes. Drinks lots of water to replace that absorbed by PG and VG which are humectants.
Your Sense of Taste
Your Sense of Taste