Wildfire smoke is causing air quality alerts across parts of the Northeast and Midwest. Here are 3 ways to protect yourself. Tip 1: Close windows and adjust your AC settings. Tip 2: Use a HEPA air purifier and avoid adding smoke particles indoors. Tip 3: Wear an N95 mask outdoors. Check out our other reviews: https://www.cnn.com/cnn-underscored CNN Underscored IG: https://www.instagram.com/cnnunderscored/ CNN Underscored TikTok: https://www.tiktok.com/@cnnunderscored Sign-up for the CNN Un