Can a swimmers ear infection cause bad breath if the drainage comes down to your throat i have a disgusting taste in my mouth and ear drainage and the drainage stinks?

It is possible if you have sinusitis at the same time which can cause post nasal drainage. The ear infection alone should not cause post nasal drainage and bad breath.

Swimmer's ear infections involve the external ear canal only and doesn't communicate with the throat. It is usually treated with ear drops For bad taste oral hygiene and dental health are key.