Old person's smell

The Japanese seem to have a genius for taste and smell. It is the Japanese who taught us that there are five tastes, not just sweet, bitter, sour and salty but also the full body taste of umami.

What justifies this post is that the Japanese have come up with a new sense and a potential problem for many of us.

There is a distinct old peoples’ smell. Here is the article. The article does not say when this smell is first apparent nor what it is.  

Since I am definitely in the old person category I will have to buy some of the relevant curative products for rectifying this problem the next time I am in Japan.