Babys head smells (forehead) but theres no peeling or other evidence of cradle cap. What else could it be? Can cradle cap smell be present w/out peel

Lotions/ metabolism. If germ overgrowth is unlikely, the other two issues that come to mind are the things we put on their skin or the odor from the sweat they make. I find some lotions will sour over time & leave a musty smell. Some kids with metabolic issues can have a mouse urine like smell or maple syrup like smell to their sweat. If the lotions or other skin treatments are not an issue I would let your dr know.
Definitely. Sometimes you don't see them if you don't look hard enough!