How to Get Rid of Odor
Removing the carcass of the animal will eliminate most of the odor, however depending on the time that the animal had been decomposing you may still be left with a lingering smell. If it is caught early enough, you may be able to get away with only opening a few windows and airing out the home to get rid of the smell. However, if the animal was decomposing for a longer period of time, you may have to thoroughly clean the area to get rid of the smell. Many prefer to call in a professional for this service to ensure that it is done properly.
There is a high chance that there are bugs in the area, since they are drawn to decomposition; most often you will have maggots on the body. Make sure that you have gloves and a face mask on to protect yourself from any diseases that may be in the area as well. You can take a rag with warm water and soap on it to clean up any left overs, which you should immediately throw away. If you are dealing with an animal in the attic, you may also have to remove some insulation, which you will also want to dispose of immediately.
You can then go over the area with a disinfectant, try to find something that breaks down enzymes as this is what many professionals use. Not only will this break down the odor, but it will remove any bacteria that could be left over as well. You will also be removing any pheromones that the animal could have left behind, which other animals follow to the area. It is best to try and find a hospital-grade cleaner, but a strong disinfectant will also work well.