You shouldn't have to go outside to enjoy a breath of fresh air. This Shark air purifier traps 99.97% of allergens and irritants so it's perfect if you suffer from seasonal sniffles. With its Anti-Odour technology, it lets out a refreshing scent as it cleans the air, leaving your home smelling as fresh as a daisy. No more lingering wet dog pongs! And thanks to Shark's NeverChange filtration system, you won't have to replace the filter for up to 5 years. It stops hair, dust and dander from building up so you can fill your lungs with fresh, clean air every time you come home.