Air purifiers for smoke and odours, 21-25 m2 room, Carbon filter, CADR rating 400-499 m3/h, night mode
To remove cigarette smoke, unpleasant odours or heavily contaminated air you should use an air purifier that is powerful enough to drag all of the air in the room through the filters around 8 times an hour (ACH) for it to be genuinely effective. To get around 8 air changes per hour in your room measuring between 21 and 25 m2 you need an air purifier with a clean air delivery rate (CADR) in the range of 400-499 m3/h.
To effectively remove harmful gases, smoke, unpleasant household odours and volatile organic compounds (VOC's) an air purifier should have a good quality activated charcoal filter.
For a bedroom or baby room, you may want to use a quieter air purifier that comes with "night" mode. Air purifiers with "night" mode run quietly in the background allowing you to enjoy clean air while you sleep.
Below is the selection of suitable air purifiers tailored to meet your needs and sorted by price in ascending order.