Breathing talc is not good for you. Talc is magnesium silica and breathing it causes talcosis, similar to silicosis. When it's dusted liberally on a baby t gets into the air and, because it's perfumed, enjoyable to inhale.
I worked with clay for years, a clay that contained a lot of talc in its recipe. So any clay dropped on the floor and walked on creates a dust that is hazardous to
breathe, just like baby powder.