ELI5:How does rabies make it's victims 'afraid' of water?

The virus affects the entire body, and especially hits us neurologically. What happens when you’re thirsty and you see water? You salivate in anticipation of relieving that thirst. Salivation leads to swallowing, lest we drool. Well for someone in the later stages of rabies, swallowing becomes a very painful act…and as with anything painful, the mind tends to not want to repeat the act that leads to the pain. The Rabies virus causes severe muscle spasms in the throat, and even the sight of water can set them off. If that were happening to you, wouldn’t you be ‘afraid’ of water, too?

Explain Like I`m Five: good questions, best answers.