![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? : 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? :](https://preview.redd.it/6djh8ia88ye71.jpg?auto=webp&s=89ad67ea32b05e6e58628ecf83509992ad6650dd)
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? :
![1½" Kitchen Sink Trap with Twin Nozzles for Washing Machine & Dishwasher - WM11 - Plumbing & Heating from Build and Plumb UK 1½" Kitchen Sink Trap with Twin Nozzles for Washing Machine & Dishwasher - WM11 - Plumbing & Heating from Build and Plumb UK](https://www.buildandplumb.co.uk/images/1-kitchen-sink-trap-with-twin-nozzles-for-washing-machine-dishwasher-wm11-p582-15234_image.jpg)
1½" Kitchen Sink Trap with Twin Nozzles for Washing Machine & Dishwasher - WM11 - Plumbing & Heating from Build and Plumb UK
![10447 Kitchen Sink U Bend P Trap Waste 76mm Seal 1 1/2" 1.5INCH 40mm 4 – Retail ABC - E-Commerce Specialists 10447 Kitchen Sink U Bend P Trap Waste 76mm Seal 1 1/2" 1.5INCH 40mm 4 – Retail ABC - E-Commerce Specialists](https://cdn.shopify.com/s/files/1/1668/0429/products/57_0621e100-9060-40df-a3bb-363f466bcc0a.jpg?v=1630612854)
10447 Kitchen Sink U Bend P Trap Waste 76mm Seal 1 1/2" 1.5INCH 40mm 4 – Retail ABC - E-Commerce Specialists
![Sink won't drain. Removed U-bend, not clogged. Rotated right-angle bend upside down and able to pour water down. Live in a flat. Bathroom all works fine. Haven't tried dishwasher / clothes washer Sink won't drain. Removed U-bend, not clogged. Rotated right-angle bend upside down and able to pour water down. Live in a flat. Bathroom all works fine. Haven't tried dishwasher / clothes washer](https://preview.redd.it/7ry8bavnias21.jpg?auto=webp&s=b289547a95953b50386fc530f50e17a11c7d3299)
Sink won't drain. Removed U-bend, not clogged. Rotated right-angle bend upside down and able to pour water down. Live in a flat. Bathroom all works fine. Haven't tried dishwasher / clothes washer
![SIA 10PPK Universal Fitting Plastic Plumbing Waste Pipe Pack with U-Bend for Single Bowl Sinks : Amazon.co.uk: DIY & Tools SIA 10PPK Universal Fitting Plastic Plumbing Waste Pipe Pack with U-Bend for Single Bowl Sinks : Amazon.co.uk: DIY & Tools](https://m.media-amazon.com/images/I/611QwqOLrZL._AC_SL1500_.jpg)