When I push my ear I can hear air but not on my left ear?

When you push on your ear and hear a sound like air, it could be due to the movement of the eardrum or the pressure changes in the ear canal. This sensation can vary between ears due to differences in anatomy or any existing conditions, such as earwax buildup or Eustachian tube dysfunction. If you're consistently experiencing differences between your ears or any discomfort, it might be a good idea to consult a healthcare professional for further evaluation.