What is good to use in the litcjen sink drain to get rid of foul semlls

Have you tried bleach?

XenoSapien

What is good to use in the litcjen sink drain to get rid of foul semlls
Use lemons or oranges whole or peels and 2 cups or more of ice as needed down your garbage disposal the citrus will freshen the drain and the ice will sharpen and clean your blades. It works for me I hope you try it.

Peace, 2muchhouse

Lemons do the trick for me. Also baking soda. But I've never mixed the two. Not sure the chemical reaction would be good for the pipes. Try the lemons first, then if that doesn't work, the baking soda.