[argile_tile]

As the building code says (did you read it?), if the footing your brick lays on (if it does*) goes down to your foundation footer, you either needs moisture exit points integrated in the foundation/footer or you need weep holes. if not, water will build up between the foundation wall and brick and push water INTO THE wooden wall base, or even into the home. really "weep holes required by law" are a bad answer to a problem that shouldn't be created.

You might not even have a foundation wall behind your brick! they still put in a weep hole because they think it's code

(a single brick-wide covering, which is NOT a brick wall, a brick wall has bricks 3-deep laid in a pattern)

Weep holes, if they are not involved in the situation above, can help prevent "a bad smell" or other effects even though water never pushes out of them.

But you should have a piece of screen there so bugs don't crawl in - you don't need a brick wall full of dead bugs behind it.