Just make sure to keep a close eye on it. Mine clicked off and on for about a month before I saw any bubbles or mucous, so that one was definitely an RI.
Sometimes some retained shed can get stuck there and cause a click or wheeze. If it doesn't go away after a few weeks, after a shed, or seems to get worse, I'd definitely suggest scheduling a vet visit. The peace of mind alone is worth it, heh.
Can you try and listen to his breathing at the head end and around the lung area?
It's a tricky thing to do but a click from the nose might be stuck shed or even the result of being in a shed cycle but noised like pops, clicks etc from the lung area is pretty much going to be an RI thats dug deep.
Are you looking inside his mouth to check for extra mucus or slight redening?
Are there any signs of mucus in the waterbowl or smeared on cage furniture?
dr del
Derek
7 adult Royals (2.5), 1.0 COS Pastel, 1.0 Enchi, 1.1 Lesser platty Royal python, 1.1 Black pastel Royal python, 0.1 Blue eyed leucistic ( Super lesser), 0.1 Piebald Royal python, 1.0 Sinaloan milk snake 1.0 crested gecko and 1 bad case of ETS. no wife, no surprise.