Air Conditioning Colds Just Another Myth
Can air conditioning cause colds? Where else would summer colds come from? Of course, even if it were true, nobody would give up the respite that air conditioning provides from the heat, but it is some relief to know that your co-workers are far more threatening to your health than your air conditioning unit.
It's a general misperception that being cold somehow throws your immune system out of whack. After all, it's cold in the winter and that's when most people catch colds. Alas, as they might say in the Vatican: post hoc ergo propter hoc. That is: correlation is not causation.
Most people do catch cold in the winter, and it is cold in the winter, and there is some connection between the two. Because it's cold, people stay inside more. And that puts them in close proximity to other people, also known as cold germ carriers. The more you are around people, the more likely you are to get infected with a cold virus. So all those winter parties and gatherings where everybody crowds in is a cold germ's playground.
There are some good reasons why summer colds happen. For starters, more people fly long distances in the summer, and being around 400 other people is an excellent way to make sure you're exposed to a lot of different infections. And the longer you are in that metal tube with those people, the more likely you are to be exposed to a virus that you have no resistance to.