geegee

I guess this is a chemistry question.
I cant find the answer online, all I see online is that u should keep chocolate in an airtight container.

my question however is, is a a chocolate layer itself an airtight seal ?

I am wondering this because I am experimenting in making my own chocolates with dried fruits and other fillings, but the expiration date that I would use for them depends on if the filling inside the chocolate is coming in contact with oxygen.

Hope you guys can help me out.

Kind regards,
Gee