Carpet powder and cats

So I sprinkled carpet powder on my carpet in my room and went to get the vacuum to find that my roommate took it with her to clean houses. I swept the rug to hopefully push the powder down so that it will not be sitting on the surface and I took both of my cats necessities out of my room and into the living room so that I could wait to until my roommate returns with the vacuum. Well my room has two doors to the bathroom, one connected to my room and one connected to the hallway. Well, one of my cats somehow managed to open the door leading to the bedroom and I have no idea how long he was in there. I checked his paws and they were bare but I still rinsed them off anyways. I am super worried if the carpet powder is going to make him sick during his short time in my room .