February is National Care About Your Indoor Air Month. Many people are worried about the pollutants and other not-so-nice things floating around outside, but how ofter do you think about your indoor air quality? Since we spend so much of our time inside, this is where the bulk of our own skin cells, dust, germs, and more get stuck! if you have a pet, there's pet dander in your air too! Air circulation and filtration is important for the health of your lungs. Remember to replace your filters and keep air circulating.