Why do our noses run when we have hot spicy food?

Why do our noses run when we have hot spicy food? Here’s some explanation:

Most spicy foods contain something called “capsaicin,” a chemical found in peppers. When ingested, it’s believed to affect “the quantity and thickness of mucus and other fluids secreted in the nasal passages.” In other words, it’s a kind a nasal decongestant. So, does ingesting a lot of spicy food help in curing allergies or cold?? Well, no. While spicy food like peppers and wasabi “offers brief relief,” in reality, nasal congestion will worsen, making one even more miserable. That’s because spicy foods cause greater congestion in the long term.