If dust mites or dander are triggers, remaining inside in a hermetically sealed house can increase the likelihood of an attack. Also, people tend to have more colds and upper respiratory infections in the winter, so being around such people in close quarters can increase the chances of an infection. |
The breathing in of colder air itself can actually cause constriction of the airway, leading to the shortness of breath and wheezing typical of an asthmas attack. |