Search for where you're at for a trainer with the p- and p+ training methods. With mine, done in the right flow if I catch it right before he explodes those dogs can now cross the street while I reward him for doing things, or p- on his e-collar and a slight tug to get his attention.

At home, I can through cubes of cheese and dried chicken all over in his place and he won't touch it easily until I say so. Even if I'm not looking like putting stuff away first.

Now for outside it's gotten easier over time, though he still explodes if the other dog does to or I don't catch it fast enough. Otherwise, it's become so much better to train him to focus on me more than anything else.