rancid soap

Chemistry experts, please forgive any wrong wording. 😅 After 2 batches that shouldn't develop DOS did in my humid apartment, I've fixed the humidity, but I'm also second-guessing my understanding of DOS, HP, and rancidity in soap. Can soap salts go rancid? Is it only the superfat that...

I've been making cp soap for a long time for family and friends. In all that time, there have been only one or two batches that have developed orange spots. Last year I tried hp processing and 4 out of five of my batches developed orange spots and also became rancid. I used the same oils I...