[H. L. Chauvin]

One (1) sincere suggestion already experienced many times:

Many at our age either smoked or were around tobacco smoke when young and never realized our sniffer was severely damaged until in the presence of young people who never smoked.

You could try getting a young kid to sniff around and you will be surprised how well they can pin point the origin of not just odors ...................... also, these younger kids can far more accurately pinpoint locations of noises such as knocks, squeaks, and hisses.

I remember hearing once of a Gaseous Cigar smoking Barber in a nearby town who only had old smoking guys for customers who could not hear well and could not smell well .......... young guys never came in his shop and he never knew why.

Hope this helps. Life is so simple.