Maybe if they could prove that exposure to tobacco smoke CAUSED anything I might think you have a point.
As it is the only thin proven about SHS isthat it annoys some people and may excaccerbate a pre-existing medical condition.
Regarding Second Hand Smoke
What can it do to me?
To be blunt - it can kill you.
Across Canada, over 3,000 non-smokers die each year from being exposed to second-hand smoke. Over one in ten of these people die from lung cancer. Most of the others die from heart disease and stroke.
And if it doesn’t kill you, it can make you sick. Second-hand smoke can:
Irritate your eyes, nose and throat
Give you a headache
Make you dizzy or nauseous
Make asthma worse
Increase your risk of respiratory infections, or make them worse. These include:
colds
bronchitis
pneumonia.
The more you are exposed to second-hand smoke, the greater your risk. For example, restaurant workers are exposed to almost twice the amount of second-hand smoke that is in offices where smoking is allowed. Bar workers are exposed to levels that are about 4 to 6 times higher than offices.
http://www.canadian-health-network.ca/faq-faq/tobacco-tabagisme/8e.html