Med any smoke would be an irritant, not just cigarette smoke. If she stood right next to a BBQ grill, the smoke from it would do the same thing.
Look My Kids were born with Pulmonic Stenosis, which is a narrowing and thickening of the Pulmonary Heart Valve. Asthma cones with the territory. Any kind of smoke, Cigarette smoke, BBQ smoke, smoke from fireworks and house fires irritate the asthma.
I never said that second hand smoke wasn't an irritant, but as for causing cancer, that's open to debate.
As far as Global warming, the scientist on the Environmentalist side of the debate can't even keep their facts strait, most conflict.
Co2 promotes plant growth (most marijuana growers know this) Plants in turn take that Co2 and produce oxygen.
Second 1 volcanic eruption produces more greenhouse gases than man could possibly produce in 10,000 years. These gases being Carbon Monoxide, Sulphur Dioxide, hydrogen sulfide, carbon dioxide, hydrogen chloride, hydrogen fluoride and helium.
While I do not deny that there is cyclic weather patterns that to the layman would appear to be the Global Warming that people like Al Gore cry wolf about, Nature always has a way of correcting this. Core Samples have shown this.
If you follow the money, you will find out that Al Gore is profiting off of the Global Warming scare.