Don't stress the smell
"These are a great product and work exactly as intended. Each one is a molded piece of rubber making it extremely durable. The complaints about the smell in other reviews are silly. They are made out of rubber so they smell like. . . . Rubber. If you have ever been to a tire shop you know what to expect. They don't smell like burning unless you set them on fire, and if you plan on using them indoors you might want to let them air out for a few days first."

