Good job of breaking down the main points raveneye.
If anyone is curious, Medline or BMJ are good places to search for some of the additional studies that point out the possible hazardous effects of second hand smoke.
Just be careful to look out for the tobacco industry's studies. We know from recently released internal memos that the tobacco industry has been waging a full scale misinformation campaign against research on passive smoke similar to the campaign they waged decades ago regarding active smoking. They've funded some bad research and funded organizations like Cato and Hudson in order to trash some good research. Unfortunately, this has created an environment where anyone who comes out on the side of the industry is labelled a stooge when that's not always the case.
In the meantime, you can check out
this article about a recent study that was presented at the latest AHA meeting.