The important thing is, at any sign of strange odor, rash, or discomfort, she needs to go see her OB / GYN, midwife or a lactation consultant. (babygaga.com)
This has a strange odor, was very linty and lots of fibers coming off the edges, and seemed to have some sort of coating on it. (amazon.com)
If upon warming the stored milk, you realize that it has a strange odor or taste, it can be due to an excess in a protein called lipase. (romper.com)