![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? :
![Kitchen Sink P Trap With 2 Washing Machine Waste Pipe Spigot Connections | Stevenson Plumbing & Electrical Supplies Kitchen Sink P Trap With 2 Washing Machine Waste Pipe Spigot Connections | Stevenson Plumbing & Electrical Supplies](https://www.stevensonplumbing.co.uk/images/source/Plumbing/traps/trap_with_2_appliance_spigots.jpg)
Kitchen Sink P Trap With 2 Washing Machine Waste Pipe Spigot Connections | Stevenson Plumbing & Electrical Supplies
![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)
SIA 10PPK Universal Fitting Plastic Plumbing Waste Pipe Pack with U-Bend for Single Bowl Sinks : Amazon.co.uk: DIY & Tools
![Waste Pipes White Adjustable Bathroom Basin Sink 1 1/4'' Connection Outlet Pipe 32/40mm Trap Syphon : Amazon.co.uk: DIY & Tools Waste Pipes White Adjustable Bathroom Basin Sink 1 1/4'' Connection Outlet Pipe 32/40mm Trap Syphon : Amazon.co.uk: DIY & Tools](https://m.media-amazon.com/images/I/61WGitPEp5L._AC_SL1500_.jpg)
Waste Pipes White Adjustable Bathroom Basin Sink 1 1/4'' Connection Outlet Pipe 32/40mm Trap Syphon : Amazon.co.uk: DIY & Tools
![plumbing - Is this horizontal drain pipe under kitchen sink a problem? - Home Improvement Stack Exchange plumbing - Is this horizontal drain pipe under kitchen sink a problem? - Home Improvement Stack Exchange](https://i.stack.imgur.com/63TTB.jpg)