The smell was really unbearable but after the first unpacking from the plastic bag. I would have almost returned. My Heaviest is a chemist and gave me the tip to expose the envelope changing temperatures. That would speed up the Ausdünstungsprozess, without the some companies for profit. Actually, the goods must be stored for about 6 months. She has to explain that it is probably formaldehyde, which decomposes rapidly at high temperatures.
So I have the envelope placed directly on the heating, eh runs in Aupentemperaturen in full swing. There they lay for 4 days and sometimes I put them on the balcony for a few minutes. And lo and behold .... the smell is actually completely gone. I did not expect me but very happy, because now I can keep the shell.