Yikes - unfortunately, concrete is porous - I would actually call a professional cleaner and ask them what would be effective. Anything you apply is just going to add another layer of smell - like when a certain brudder of mine spilled an entire banana Fribble in my car once, felt terrible, and tried his best to clean it up, but the cleaning product just added a more chemical smell - so instead of smelling like artificial banana every time it was humid, it smelled like artificial chemical banana!