I had this same question after buying the same Olga mat. I wrote to the company and they got back to me. Said all their mats smelled and suggested I leave it out to air it out. At present mine has been in the garage for a week. Still smells. Olfa also said to wash it down with Pine Sol or something with a lemon scent. They said I might have to do it several times. I haven't decided what I am going to do. I will wash it down and see what happens.