[Maritime Q-Scout]

Quick question. Skylar's smoking. I'm trying to remember if the mentioned how it used to be. I vaguely recall saying she quit and started up again just after she became pregnant with Holly.

I always assumed that her smoking was the cause of Walt Jr's illness (I honestly have no idea if that's even possible) but could her smoking have been the root cause of Walt's lung cancer? I'd have to rewatch to come up with a theory to agree or disagree but it's a theory I heard today and assume that someone/people here could comment off the top of their heads.