A. Dead animals will smell until they are completely decomposed or until they are dried out, whichever comes first. It goes without saying that the larger the animal, the more biomass there is to rot, the stronger the smell will be, and the longer the smell will last.
When cells are damaged by disease or injury, large amounts of these leak out, causing blood tests to show that enzymes are elevated above normal. (You can roughly compare this situation to a car that's leaking oil. Leaks in many parts of the engine can have the same result: oil all over your driveway.)
What do elevated CPK levels mean when exercise is not a factor? Muscle or heart : CPK can be released from damaged or inflamed muscles, including the heart muscle. Some muscle diseases that cause weakness and pain in the muscles can elevate cpk, as can any muscle injury (including an injection into the muscle). Heart attacks and other heart muscle injury or inflammation can also raise the cpk. There are tests to determine the source of the cpk. (fractionation of cpk).