After a spicy meal, your body won't be able to tell that it simply has something to do with the salsa you just poured in your tacos... it will say: ‘I don't care if it’s a thermal burn or a chemical, but I need to get rid of it.’
Even though the spice isn’t burning you, the brain gets the same signals as if it was and reacts accordingly. As a result, the body will try to cool itself down.
Your burn-sensing neurons — in your mouth, stomach, and elsewhere — are going to do their thing whether what you’ve swallowed will just probably give you some discomfort on the toilet and a big sweating time.
Yup, spicy food can turn anyone into a snotty, crying mess. So, try to stay cool!