Their lungs are like a million times smaller than ours, so if it's bad for US to inhale, it would be VERY bad for them to inhale. Think Canary in a coal mine.
It has talc and fragrance in it, don't risk it. It's a good question.
If you need to add something to the dust, you could try a little corn starch. That's the only thing that I add to dust knowing it won't cause any issues.
This is slightly off topic ... I imagine the only reason to do this is bc you want your chin to smell like baby powder?? I've never used th bc I assumed they'd be bad, but there are fragranced dusts out there. I'm not suggesting it bc personally I only use blue cloud, but would this be an option or is it a no no? Just curious.