Take RTA’s advice and tape it up. I wish I thoughtta that! We removed a 25yr old carpet that had cat and dog and child stains. It was moldy and nasty. Sneezes and Weezes were involved, but by cutting it in sections it was easier to roll up and get out of the house. I do recommend wearing a mask, but for me, with asthma, it didn’t do much good.
My own personal hell: In another room, we had a cheapo berber carpet. After the puppy was trained, we decided to put in hardwoods. Now I had shampoo’d this patch a lot and I knew it was gross. It wasn’t until hubby went to buy the floor and I to remove the carpet did I realize that there was another CARPET underneath. That was nasty. Mold everywhere and the thing was glued to the subfloor. It took hours of cutting 6 x 6 inc strips and scraping it off.