I bought the biggest size mat Olfa had. In less then a month it started peeling. The response from Olfa was sorry, not our problem, mats are not guaranteed. I won't by Olfa mats again. I've never noticed a mat being stinky but I have read many have bought some that were. I think the answer was it was a bad batch and they were being replaced. I guess I should have told Olfa my mat stunk!