Speaking mostly from personal experience here, if a kid gets a suped-up liver from their dad's smoking habits, cool. But how many kids fathers stopped smoking when the kid was born? My point, the father's smoking habits may have passed down a strong liver but his continued use damaged the child's lungs and possibly more.

These mechanisms of epigenetic inheritance or whatever need much more study. It is far too early to draw any conclusions other than we need to keep researching.