Humans May Be Slowly Losing Their Sense of Smell, New Study Hints.

Humans’ sense of smell may indeed be gradually fading, according to a study that has found people carry different versions of two scent receptors for musk and body odor.
Olfactory receptors detect airborne chemicals that waft into our noses, but smell receptors vary immensely from one person to the next.
Any two people, on average, will have functional differences in over 30 percent of their odorant receptor genes, a 2013 study found. Which explains why some people might find some smells pungent or pleasant that the next person can’t even detect.