Rock Shox deluxe select + making squishing noise sometimes

First time full suspension mountain bike owner. Is this level of squishing air noise normal on a rear shock or do I need to get it rebuilt? The shock is a Rock Shox deluxe select +. Shock feels fine, but I also don't have a ton of reference for what feels fine. Also it is a dry air noise not a wet noise. I've seen a lot of videos on here with a very squishy, mac & cheese wet noises where the consensus is full rebuild is required.