After opening the individual shoe box I was able to identify the shoes as a cause. From each Hudsonschuh (various types), whether red / brown or black, is this smell.
Clarified by a mission of public service broadcasters, which over the leather processing in Asia, India, etc.
it was reported that smell must also of a layman as a result of the use of hazardous (but cheap) tannins
be considered. Such a thing does not come to me on his feet.
Even now, when the shoes are all packed back into their boxes to return, enters this disgusting smell from the
big return carton.
Do it only surprised that this leather is now such a large spread and is also used in shoes then finished in Portugal.