If the flair is only momentary then the air assist is blowing it out.
You can (with the machine off) pull the gantry all the way forward, gently slide the head toward the middle and lean over the gantry looking behind it at the head carriage to glimpse the fan and see how dirty it is.
Unless you have been using the machine a lot over something like 7+ months, you probably don’t need to worry about it yet, but it will eventually need Cleaning.