ABC 33/40 - Birmingham News, Weather, SportsAir Flights and Germs

It's a common complaint: fly on a crowded plane and come home with a cold.

So, what's in-the-air up there?

A new study shows air travelers suffer higher rates of disease infection,

It pegs the increased risk for catching a cold as high as 20%.

Heavy travel periods are especially bad, planes packed full of families and all those germs.

The thing that's most often blamed?

The recirculated air throughout the plane's cabin.