How do they smell? The last recycled rubber tiles I used on a terrace patio smelled so strongly that I would not use them indoors. We are looking for a basement gym flooring.

Our 1-1/4" Fit Rubber Tiles do have a rubber smell to them, but it is not super strong. To help mitigate this rubber smell, we recommend mopping the floor with a mild soap and water solution and then letting the floor air dry. You will want to make sure that where you install the flooring is well ventilated. If you are very sensitive to smells, you may need to repeat this process a few times to get the smell dissipated to an acceptable level.