It is likely more distressing to the family and loved ones to hear the death rattle than it is to the patient experiencing it. If your loved one experiences end-stage wet respirations, here are some practical things you can do to minimize or eliminate it: Try changing the patient's position.
carbon dioxide - a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis.
By that definition, carbon dioxide is not pollution. However, Webster's also has the definition: to contaminate (an environment) esp. with man-made waste.. Carbon dioxide is a waste gas produced by fossil fuel combustion, so can be classified as man-made waste. One can also make the case that carbon dioxide is contaminating the environment, since increased CO2 from burning fossil fuels has already harmed sea life.