nostril

Hi, I have just noticed my guinea pig gingy continuesly sneeze a few times in a row and clear discharge leaking from only 1 nostril. He is not lethargic, doesn't have crusty eyes or nose, just wet and runny, only when he sneezes.

Hi guys, yesterday I noticed my guinea pig has one nostril swollen. She is completely normal, eating, drinking, playing. It is just the one swollen nostril. It seems like it doesnt hurt her either, she is ok with me touching it. Could it be that just a piece of hay that could have hurt her? Or...