My Mom and our neighbor would hand-grate a bunch of horseradish every year to store in their basement refrigerators. One year they got the bright idea to do it in the blender on the screened back porch. When they took the lid off the blender they ran down the steps to get fresh air. Meanwhile, of course there was a brisk breeze coming in the back of the house and brought the smell into the house, going through the kitchen, hallway, dining room, and reaching the living room still smelly enough we all went out the front door!
The grocery store sells fresh roots in the produce section. I'm tempted to buy a small one to grate fresh into foods as needed but the memory of that day keeps me from buying it.