Brain confetti: Why our sense of smell declines in old age. As mammals age, their sense of smell deteriorates. Scientists have now investigated why this is the case. For their study, the researchers tracked the development of stem cells in the brains of mice using what are known as confetti reporters. They then analyzed the complex data obtained using intelligent algorithms. Source 1e.
To lose sense of smell completely seems, to me, horrible. As that would also indicate the amount of taste you still have. I believe 80% of taste is regulated through smell. The other 20% is supposedly just tastebud flavours (Sweet, salt, bitter, sour, umami)
So it would be great if there was a remedy for this.
I'd back that.