Dogs are most afraid of smells such as perfume, toilet water, lemon, vinegar, disinfectant, mosquito repellent, mothballs, orange peels, etc. These smells are irritating, and dogs may not be willing to get close to them after smelling them. However, these odors will have a certain impact on the dog's sense of smell, so it is best not to use this method to prevent the dog from pooping. You need to correctly guide the dog to defecate at designated points to fundamentally solve the problem.