Why does your breath smell worse after brushing?

If you already have an issue with bad breath, then after brushing it becomes more noticeable because brushing your teeth make your mouth dryer, and a dry mouth has worse breath.

I usually either just chew some gum or drink something till it wears off. However, those are only temporary solutions; I'm pretty sure the only way to "fix" the bad breath after brushing, is to either find a special tooth paste, (I've heard they exist, but I haven't seen them personally,) or to just keep up with the brushing. Mouth wash might also help.