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: cnn.com/cnn-underscored CNN Underscored IG: instagram.com/cnnunderscored CNN Underscored TikTok: tiktok.com/@cnnunderscored Sign-up for the CNN Underscored newsletter and the CNN Underscored Deals newsletter to receive product reviews and deals straight to your inbox. Watch 24/7 live news with CNN Headlines: bit.ly/4eIvlTr #cnn #cnnunderscored #underscored #tipsandtricks #airpurifier