Wine for the most part is produced with added Nitrates.....Only some Organic producers do not use it.....Yet the fermentation process creates some Nitrates naturally.
I reckon water might be the only truly safe product to drink.
As for naturally occurring Nitrates being created in Bacon. I guess for now I will have to take your word for that. Actually I don't care either way.
Seriously though if you are concerned stop drinking any wines