Drain Waste Trap Pipe Connector 1 1/2" BSP x 40mm with Double Dishwasher Input : Amazon.co.uk: DIY & Tools
Viva 1½" Kitchen Sink Trap With Dishwasher & Washing Machine Connections (WTST02) for sale online | eBay
FloPlast Dual Sink & Wash Trap White 40mm - Screwfix
Wavin Osma Waste adjustable sink trap 75mm seal 40mm white | Travis Perkins
115mm Single Kitchen Sink Drain Waste P-Trap Wash Machine
Mizzo Double Bowl Space-Saving Sink Trap Waste Pipe with Dishwasher & Washing Machine Connectors - Lasting Kitchen Sink Waste Fittings for Modern Homes - Reduces Clogged Plumbing Pipe Problems! : Amazon.co.uk: Everything
Washing machine (right) and dishwasher (left) wastes connect to kitchen sink trap. It often smells when the washing machine is running, any ideas as to how I can stop that from happening? :