We do many things out of habit without thinking of the reasons behind why we do it?
When wine is ordered in a restaurant for example, we go through a whole ritual of showing the bottle and its label.
What matters most is that the right wine and vintage are served.
Smelling the cork does not serve any purpose as far as I know.
As for serving wine from the right, is it so that customers do not get elbowed by the sommelier or the server?
Has it got anything to do with smelly armpits.
Would strong fragrances worn by the person offering the wine be a bigger distraction to appreciating the wine fully than body odor?
I could not find any definitive answer on the origins of the etiquette of wine service.
The basics are covered by David Gaier in Ordering and Serving Wine: A Tutorial.
If you have any answers with history to match them, do share them.
Will a consumer brand come up with a deodorant that puts an end to smelly armpits yet offers a neutral scent?
Can you imagine a commercial to illustrate it?
Recent Wine Blurbs: Wine with your Own Stamp made in New York City: City Winery