Inside ear white web. And treatment.

My baby is 20 months old. He has ear infection. Neither liquid nor wax is there. And there is no smell in ear also no pain also. But at the end of ear inside white layer like is present in the end inside both ear. So I am worried about him. No seasonal infection. It is just I m thinking due to breastfeeding in lying for long times. So he put finger and start ithcing and doesn't stop . But he did this in one ear in only that time. Never happened in both ears same time. Most time in left ear and some time right ear. What treatment can be done. I feel that it may be serious. In night also sometimes put finger in ear while sleeping and start itching Kindly explain this problem and treatment . Thanks