I ordered the 5”3 x 7”3  area rug, it arrived Sunday and it still smells 3 days later. The chemical odor is so unbearable that I can’t even go in my art room to finish a canvas painting that I started without getting a headache, so I DON’T! I just keep the door closed, hoping the smell will fade eventually. I’ve sprayed, vacuumed, sprinkled baking soda, brought in a fan and even open the widow to that particular room and it still stinks. 
I ordered this rug based off the positive reviews. I can’t believe no one mentioned how horrible it smells! I submitted a question to the “Wayfair Team” asking how long the odor would last. At the bottom it said to wait 8 hours for a response, it’s been 3 days and I still haven’t gotten a response.