Cat weird noise for days now

• Species: Cat • Age: 3-4 years • Sex/Neuter status: Neutered • Breed: Shorthair? • Body weight: 7.5-8.5lbs • History:At shelter years ago and a respiratory infection. • Clinical signs: Noise? • Duration: ~3 days • Your general location: Philadelphia

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Hi all, just wanting some advice on my kitty. I know none of this substitutes a real vet visit already so pls don't criticize me for looking into my cat issue. Now for the past ~3 days he has been making this weird noise. I didn't say anything sooner because there were times it would stop and I would totally forget it. He makes this noise every few seconds. Just counted 3 times and he can go up to a minute without making the noise and then he settled on my lap and is making them about every 25 seconds. He's making it less when he is just laying down after settling. Have not yet noticed the noice during eating.

Is this a sneeze of some kind or a cough? I looked into his throat the best I could and I don't see anything at all. Just some guidance/ideas would be nice

thanks in advance