What are the concerns about 2nd hand vapor? Whenever I see media about the topic it always seems to rely on naysayers downtalking it because they say there is no real research. Is this really true or is this really more about the squeeky wheel getting the most attention? If not true what are some valid resources that can be brought to the forefront to disspell such reporting? If it is true why? Seems like a ripe topic to research on if there is already this type of controversy.