Sooo I had been hanging out with him in the basement which is the driest room in the house due to heating and Charlie started scratching his nares and wet sneezing for a few minutes, never seen him do this before, his sneezes are usually dry. I thought it might be the lack of humidity (?) so I brought him upstairs and noticed he had some king of "booger" stuck right at the rim of his left nare. I wiped it gently with a tissue and it came out, and since then he only sneezed once (seemingly dry) and scratched 4 times, which is way less than before I removed the "booger".
Should I be concerned that he may be ill or does it sound like a one time issue? For context, he hurt himself a little bit between his nares a few weeks ago by flying into a window (it is healed now), and due to his immune system being increasingly alert due to that he started having a bit of gunk in his nares. I'm thinking it might be the old gunk wanting out, lol. What do you guys think? He has a vet appt in the beginning of february for a checkup, can it wait until then? He is his usual self and everything, I'll def keep an eye on him though

Should I be concerned that he may be ill or does it sound like a one time issue? For context, he hurt himself a little bit between his nares a few weeks ago by flying into a window (it is healed now), and due to his immune system being increasingly alert due to that he started having a bit of gunk in his nares. I'm thinking it might be the old gunk wanting out, lol. What do you guys think? He has a vet appt in the beginning of february for a checkup, can it wait until then? He is his usual self and everything, I'll def keep an eye on him though