I love living in Nashville, Tennessee, but the Volunteer State can be heck on allergies. As an allergy sufferer — and one who suffers from dry eye syndrome — I appreciate the Smartmi P1 air purifier. I’m running it in my home office. With powerful purification capabilities, including an enhanced HEPA Filtration Technology, the P1 can cleanse 200 square feet in 10 minutes. It can purportedly trap particles as small as 80 nanos compared to 300 nanos from other HEPA filters, blocking 99.97% of particles that pass through its filter. I can’t verify this, but I’ll take the Smartmi P1 makers at their word.