The new air purifier has arrived and is now gently softly whirring, purifying the air! The old one is in the bedroom, making a huge racket in comparison. Now if I could get a new filter for the old one, that would be great...
In any case, double air purifiers. My flat isn't very big so the old one just about did it, but am curious to see how much more of an effect there is post-smoker polluting my air, now!