Talc is toxic, very closely related to asbestos. I am sure he is probably just fine. It has more long term effects (cancer) than immediate, unless inhaled into the lungs. Many babies have died using baby powder, can't understand why it is still on the market. Switch to baking soda, it will do a better job and be healthier.
Here's a link to talc and the dangers:
http://www.preventcancer.com/consume...etics/talc.htm