
The only dog at risk would be the unvaccinated one, not yours.
There are so many ins and outs about vaccines, so many people believing different things, that the way I personally see it is that everyone has the right to do what they feel is right. Me, I vaccinate mine yearly and at least then I know mine are safe even if unvaccinated dogs are around and I'm happy with them having the vaccines. My dogs have three times been in contact with unvaccinated dogs that ended up dying, two of parvo, one of distemper. My own dogs were fine.