... isn't always something that can be eliminated in just a few days of airing out.
The most difficult smells to remove (in my opinion) are those from perfumed dryer sheets or "odor eliminators" like Febreze. I guess it isn't a problem if scented things don't bother you. But I have had dolls and outfits that still reeked of strange perfumed scents a year after purchasing them.
I actually had one Seller tell me that he stored his dolls in a room that had a fragrance spray, so they wouldn't get a foul smell to them. Which makes you wonder what type of foul smells he was trying to discourage. The person had great NRFB dolls and outfits .... but after two heavily perfumed transactions, I just had to stop buying from him.