Asthma, allergies and eczema are all related they are actually passed down (genetically) now smoking can cause asthma/bronchitis the majority of the time its from genetics.
As well your body changes every so many years after having elisa I got eczema never had it before after having cam I now have environmental allergies and a crap load of health problems....
With my daughter she has never been sick the only thing she came down with so far is 1 cold and 2 utis (commom in baby girls)
cameron has had rsv my niece had it and my brotherin law left his daughter at my place knowing I had a newborn and didnt care well my son was in the hospital for about a week because of his carelessness!!