It really depends on how long you are keeping your cigars in the humidor. For 2-3 months, the answer is no, the flavors will not have a chance to blend together. For 2-3 years, you might want to separate the cigars slightly so the flavor of each cigar is not jeopardized. If you do want to separate cigars in a humidor, then you will need Spanish cedar dividers
If you are storing flavored or infused cigars it becomes more important to keep them separated. You never want to store regular cigars along with infused cigars. Most people keep a separate “infused only” humidor so that the flavored cigars do not meld with the non-flavored ones.