Is nebulizer necessary for a coughing toddler?

It really depend on the pd you are seeing i ever seen 2 different pd one did give nebulizer but the other one did not give but still my boy recover and grow up well. Nebulizer is not really harmful but I will reduce to use on my son because I prefer him to recover without this. In fact he doesn't like the nebulizer. I hear from my colleague that their pd do give her nebulizer because Her son have bronchitis usually pd will give if they have serious bronchitis