I have the same experience as
@ChinaVoodoo , I don't air my jars during kiln time because.... well because I don't have time.
When I open a jar, the smell is often not very pleasant, but then I blow some air inside and the smell changes to something better.
When I think the jars were long enough in the kiln (4 to 8 or more weeks), I put the leaves in their new home : a plastic bag. The «not so good smell» vanishes in no time.
So I think it doesn't mater a lot if you air them every day or not.
I had some jars I opened regularly to check how they were aging (in the kiln) and I smelled no difference with the jars I did not open before the end.
Wait, I am a lier ! I open the jars from time to time (every few weeks) to check if the leaves are not too dry, in this case I spritz a few drops of water.