Sweet Potato Slips

[kath]

My sweet potato slips have been growing indoors for over a month. The potatoes are toothpicked and hanging into mason jars. Some of the leaves now have these yellowish bumps on them- sometimes on the top, sometimes on the underside. They squish very easily and that smells bad. Not noticing any insects and the slips otherwise appear normal and healthy. Does anyone know what this is and if I should just remove affected leaves, wash leaves, spray or ignore?