I had 3 packages arrive at the same time so when I picked them all up from the porch the top box was close to my nose. I could smell a chemical odor coming from the box. When I opened the box the odor was stronger, then I took the sheets out of the plastic bag they were in and the odor was a little worse. The other 2 boxes were sheets also and smelled bad too. I should had returned them immediately but I put them in the washer to try to get rid of the odor. After the 1st wash they still had a smell so I sprayed them with some Febreze. After about 1 hour I put the Febreze sprayed sheets back into the washer. They still had a chemical odor so I washed them 1 more time for a total of 3 washes. On the plus side even after 3 washes within 6 hrs of arrival the seams are still intact.