Why noses start running from eating soup?

I wouldn’t know. The only food I can think of that makes my nose run is hot wings

The heat (and steam rising from the bowl) loosen your nasal passages. That’s my guess. Kind of like how the steam from a shower clears you out too.

@Allie was pretty close… there is the added effect of heat and moisture in such close proximity to the nose that you don’t get with other drier foods… the heat is also a vaso-dilator… so the blood vessels dilate and more liquid passes through them increasing mucus production.

the steam is making snot come out haahaa