Remove interior paint from carpet
Carpets and paints can be made from a variety of materials. Water might clean it up. Paint thinners might dissolve the carpet (depending on the carpet). You could try isopropyl alcohol without much risk. But I would start by testing some carpet fibers (cut a few fibers off with some scissors) in a dish of paint thinner before testing thinner on the carpet. And still, even if the fibers look okay, use caution applying thinner to carpet. Apply thinner to a rag instead, and wipe the paint off with the rag. 

If thinner dissoves the carpet, then the last resort is to give the carpet a trim. Hopefully the paint is not too deep and you can carefully cut out just the paint.