Why Do We Need Blood To Live?

Blood carries oxygen, nutrients, and chemical energy from one part of your body to the other. Without blood your brain would never get the oxygen which is produced in your lungs or the chemical energy which is produced in your digestive system, and you would die very quickly.

What If there were another way for the body to obtain oxygen and all the other nutrients and chemical energy it need with out blood or blood cells we could get rid of aids that way potentially just a thought

Because we need to smell