What’s the difference between dub and reggae?

Technically dub is reggae mixed to have vocals removed or toned down.

Officially both forms of music make me unreasonably angry at the world. Really. Unreasonably angry. There's just nothing I can do about it.

So if you see me and my mood changes suddenly, have a listen. There could be dub or reggae playing somewhere nearby. Just get me out of there and get me in a '100%' immersion bath immediately.