Your five SENSES are: smell (with your nose), taste (with your tongue), touch (with your fingers, etc.), sight (with your eyes), and hearing (with your ears).
If living organisms couldn't smell, they probably would "RARELY" be able to find a meal every once and a while. If they couldn't taste, they would probably like to eat everything. If they couldn't see, they'd probably bumps into a few things or so the first few days of being blind. And if they couldn't hear, they would probably "STRUGGLE" during communication with other living things.