Rash Under Breast That Smells Strange Rash Under My Left Breast?

Strange rash under my left breast? - rash under breast that smells

Lately, it seems always a red rash on my left breast at the same place, and from about 2 times or less per month. I am a very clean, bras always clean and I am very puzzled why this is happening. The outbreak has a terrible odor, with a milky liquid to appear, which, to return quickly after cleaning. I love the beach tomorrow and be able to wear a bathing suit and not worry about this rash .. Advice would be great, thank you in advance!