I enjoy having clean air in my home regardless of others who smoke or use harsh chemicals. This air purifier works amazingly well at cleaning my air quickly and without hassle. It has many settings and an automated feature that allows it to turn on when it senses any particles in the air. It is also very quiet and doesn't make anyone up at night if it needs to turn on in our sleep. Overall it is a great machine that I would highly recommend to anyone looking for a home purifier for large areas in their home.