You can, but...
We have before (out of necessity when kids had the flu) and you need to know that wet feathers smell awful. When you place it in the dryer, plan to have it go through 3 or 4 cycles on high heat. Place in two new fabric softener sheets each time and a tennis ball. I know it sounds crazy, but it does actually work. When all is said and done, they smell good and are nice and fluffy. It is just a big hassle/time consuming!