Yeah my brother's wife will completely shut down and start screaming if a dog comes within 5 feet of her. Where she grew up in China dogs were wild animals that would viciously attack you if you got near them, so it's a pretty understandable reaction. So I'm not sure why you're getting downvoted here.

Also having personally seen how poorly trained most peoples' dogs are I would be very uncomfortable having a random stranger's dog near me. A lot of the dogs I encounter on the street are neurotic wrecks incapable of passing without barking, leash pulling, or lunging.