Polyurethane Foam Odor Eliminator for Carpet Backing and Underlay Odor Reduction: A Comprehensive Review Introduction Polyurethane (PU) foam is a ubiquitous material employed extensively in carpet backing and underlay applications due to its excellent cushioning, insulation, and sound absorption properties. However, PU foam can emit unpleasant odors stemming from various sources, including residual manufacturing chemicals,...