I have chronic clogged ears, went to ENT nothing even got tested for allergies and nothing, and cat scan. Don't know what to do?

Clogged ears. From what you describe, i assume the ct scan is also normal? Did the ENT see any fluid behind the drums? Do you have any nasal symptoms? If so, a nasal spray can help, even without nasal allergies. If you felt the ENT did not address your symptoms, you may want to gto back to them or seek the opinion of another one.