As the seasons change, so does the amount of pollen and particles that float through the air.home air purifiers The air we breathe on a daily basis is actually very polluted and unhealthy. Did you know that more colds are caught in our own homes than anywhere else. A room air purifier will keep the air in your room clean, and free of germs and bacteria that can cause colds. You can purchase a room air purifier at most hardware, building supply or household stores. They are easy to operate and just plug into an outlet. There are many different sizes and shapes to choose from and some are very decorative and stylish.