Ok, I did the googling. Most of the very few sites that talk about using sevin indoors were dealing with idiots that were covering their carpeting with it in an attempt to get rid of fleas. One site talked about how practically every country in the world has banned the use of sevin, except for the United States. I highly doubt that. There were many gardening sites that told you how to apply it to the garden and yard and then it was safe for pets and children.
It's just like anything else, ya read all the yada, yada, yada, then you just go do it. I've used sevin many times, mostly for ground dwelling hornets. I've read the label instructions, cautions, and warnings. I will use a mask and plastic gloves. I will sprinkle the dust on the plants down in the basement where there is no wind, with newspaper under the flats to catch the excess. I will be ok.