The answer to 'tile smells bad' is that there are several common causes, including mold, mildew, trapped dirt and debris, or a buildup of bacteria. Symptoms may include a musty, unpleasant odor, discoloration, or visible growth on the tile surface.
To address a smelly tile issue, start by thoroughly cleaning the tiles using a tile-safe cleaner and scrub brush. This can help remove any surface-level grime or buildup. If the smell persists, it may be necessary to treat the tiles with a disinfectant or mold/mildew remover. In some cases, the tile grout may need to be re-sealed or replaced to eliminate odors.