Chairs, both new and old, have a unique odour as they contain plastic and foam. That comes from the factory environment and the off-gassing of materials. Once they get old, the story continues and they pick up odours from many events. The fact is that the chairs, both old and new, need the removal of the odour. It is a good step as it is a big part of your work. Here is everything you should know about how to clean office chair smell.