A strep throat is basically an infection of the mucous membranes lining the pharynx. It is caused by bacteria and at times, infects the tonsils as well. Though it can affect anyone, school children are more prone to strep throat. Moreover, people who smoke or live in damp and crowded conditions are also readily infected with strep throat.
Other respiratory problems are of a more permanent nature. Asthma is one of the most common respiratory problems. This usually shows up in youth, and affects the way that you breathe. Strenuous activity can cause the airway to close, making it difficult to breathe. Most people who have asthma have inhalers that distribute steroids, or they take them orally. This helps the airway open back up so that the person with asthma can breathe more easily. Many people learn to control their asthma well enough to play sports. One of the Olympic gold medallists in swimming is asthmatic.
Car emissions also create smog, acid rain, climate change and Polution,  Worlds most poluted contries, Root Cause of polution. It has been stated that in Canada, 50% of the greenhouse gas emissions are from vehicles.
Another consideration is the thickness of the lens. The more corrective power your eyes require, the thicker the lens is. A thick lens presents a higher risk of infection. If your eyesight is very bad, RGP lenses might be a better choice for you, instead of soft contact lenses.
The moment people resolve to try living green, it's easy to make a couple of lifestyle alterations that will benefit the planet. The Net is a wonderful source of information on living green and how you can get rolling.