Thanks for the reply! I’m referring to all that, actually. I’m interested in how and why are the respiratory and immune system of smokers’ offspring different, eg if the offspring have more risk of respiratory infections or asthma, then why and how does it happen, whether is it irreversible, like do the oncogenic substances do something to the lung tissue itself to weaken the immune response there etc. Seems like a complex interesting topic and I am just curious. :D