Cigars pick up everything. That is why we are always worried about marrying flavors or putting flavored cigars in with our regular cigars.

My advice. Even though the inside may have some cedar. I wouldnt put a leather cigar case in my humidor. Especially for long period of time.

Any smells that that case throws off. Is definatley going into your cigars. Especially in a small closed enviorment as a coolador or a humidor.