Inhaling baby powder?

i'm at home with my sister.. and she told me to "smell" this baby powder.. but she pressed the bottle and i inhaled A LOT of it... my chest hurts when i take a deep breathe and im coughing ALOT.. im guessing my lungs are probably a bit irratated.. do i need to worry about this or will i be fine... the bottle was full so when she pressed hard on it, lots when through my mouth and nose it really burns too.