How To Stop The Bad Smell From The Body?

Hi, may I answer your health queries right now ? Please type your query here... hello, I am 15 years old and I'm still at school in year 11. since year 8 I have been suffering from smelling of poop. I am starting to get scared now because I don't know what to do because I am trying lots of things and nothing is working. is there anything I can do to stop this because it's very imbarrasing.