Here are a few ways you can protect your nose when you are picking up dog poop: 1. You can use scented poop bags to pick up the poop of your dog. 2. You can use a long handle scoop to pick up the poop of your dog. It allows you to keep your nose at a larger distance and finally prevents you from gagging. 3. You can allow the poop of your dog to dry first and then pick it up once it has turned white. The fresh poop smells a lot and may prone you to gag. So wait for a few days, at least a week, and then pick up your poop from the backyard. 4. A nose plug or tissue paper can block the smell of the poop of your dog and ultimately prevent you from gagging. 5. You can use freeze spray to pick up the wet poop of your dog.