What Does Recurred Unpleasant Odor In The Chest Area Suggest?

Good morning, there is certain odour I was perceiving from my chest region, initially I thought it was due to the family planning I did some years ago which I removed 2 weeks ago and the odour stopped but to my surprise it back again 3days ago. I am so confused, I tried various means to curb this unpleasant odour by detoxin my body system, loosing 9kg, cutting down fatty food, stop taking red meat, carbonated drinks, dairy product etc. I use antibacteria soap but all to no avail. Kindly advice on this.