 And if you can't do that, you live in an apartment building and you're not in control of it, at least buy one of these HEPA filter systems, these four-stage HEPA filter systems. It's worth it. It's such a great investment. Turn that baby on and run it so that you have the cleanest air possible. You'll be better off whether it's air-conditioned or not. Because these poorly maintained air conditioners can lead to all kinds of things, including migraines and headaches and dehydration, poor quality of air.