u/Fuzzy-Biscotti-4361

Hi

I've been working on a oil painting but after a few days, in some specific areas it start showing some kind of marks, does anyone know if is mold? or something else? Where I live is really hot and I was working on it with my AC ON, we have a lot of humidity too and I think I didn't let the painting dry properly so I think is possible that it started growing some mold but I don't know and it's only showing these marks on the brown painted areas. It doesn't smell to anything besides oil painting so I'm not sure. I hope anyone can help me, thanks 🥲