I have asthma, and purchased my first mini several years ago. I used it in my car on bad air days. I have given one to my asthmatic brother and now have one near my bed and on near my recliner. I have larger purifiers in every room in my house because my asthma (or maybe the environment) has gotten much worse, but I still keep the minis near for extra help on those days that are rated “unhealthy.”
Nothing but good feedback. I only have needed to use it on the first setting and it lasts so long! I feel like my air quality wherever I am has gotten so much better!