Yep, it was probably the formaldyde. I used to work for a company that only sold socks. Millions on the walls and tables. I also had a problem with the oder of many mills that made them. The formildade is put into the yarns so the boweevills don't eat it up before the mills can get it used. Some times it goes away, but most times it lingers alot longer than most. I used the plants in the shops that love the sent. Then I made sure that everyone knew about it and washed the items befor wearing them. Some Countys stll use too much of the cheimicals. (China). Good luk in getting rid of it.