How to get rid of the dead flesh odor from an open wound around the nipple?

A dead flesh odor may be a sign of necrosis or infection.  Your plastic surgeon can assess this and rule out any cellulitis, abscess or fat necrosis.  when there is a non infected open wound without necrosis: Silver Sulfadiazine cream, Dakins and saline soaks can be wonderful in minimizing bacterial load and shortening healing time.  A plastic surgeon can also rule out any foriegn body such as suture which may be prolonging an open wound.  Good luck to you.

Hi and welcome to our forum!
A clean wound has no odor. The presence of odor suggests the presence of either non-viable tissue or infection. This requires the immediate attention of your physician as frequent intensive local wound care is required to remove unhealthy tissue, eliminate the odor, and promote healing of the wound. 
Don't delay!
Best wishes...