@edgarblythe,
I think the thing about elderly smelling is way overblown. I shop and live in south FL in an area where elderly are concentrated. I don’t smell any difference from the younger public. Of course, I’m 73 yrs of age so I might not be a good barometer. Most people would say I’ve a good sense of smell and food tastes great to me.
I do know some elderly that put their winter clothes in mothballs. So, perhaps that’s ‘old people smell’.