Honeywell Air Purifier Enhanced Filter Series is designed to help reduce the most common household odours and VOCs, so you can customize your filtration experience based on your needs. Four (4) options are available in this line: Pet, Smoke, Kitchen, and Home Renovation. This OEM genuine Honeywell HRFTS1V1 Enhanced Smoke Odour Air Purifier Filter T” is specially formulated with treated activated carbon to capture and adsorb smoke odours from cigarettes, cigars, marijuana, wildfire smoke, fireplaces, and wood-burning stoves. Use of this filter along with the Pre-Filter and HEPA Filter may help reduce smoke odours up to 4.5 times faster (1).