It’s all a matter of airflow and particles. You’re not alone if you’ve ever woken up with a stuffy nose or itchy eyes and realized that your bedroom is dustier than you’d like. Dust is a common problem in many homes, and it can be especially bad in the bedroom, where we spend a lot of time sleeping and relaxing. It can make your allergies worse, aggravate your lungs, and even cause sleep problems. But where is all that dust coming from? Why is it that, despite our best efforts to keep our bedrooms clean, dust seems to accumulate at …