Microfibre cloths may smell if the proper care instructions are not followed or if the water in your home or office is hard and high in mineral content. Only use environmentally friendly soaps without fillers when you are laundering to prevent the microfibre pores from being clogged and causing odor. If your cloths smell we recommend trying one of the following suggestions: washing them in hot water, soaking overnight in laundry detergent and washing in hot water, or boiling for 10 minutes to remove any build-up on the fibres.