Smelly / Stinky Bowel Movement
A soft, foul-smelling stool that floats, sticks to the side of the bowl, or is difficult to flush away may mean there is increased fat in the stools (as with Mucus / Slime Bowel Movement). Stools may sometimes be pale too.
What Causes Smelly / Stinky Bowel Movement?
Initially it is safe to assume something you have eaten has caused this smelly feces. However, if it appears in this condition there may be an underlying disorder.
Lipase, a digestive enzyme produced by the pancreas, and bile salts from the liver are needed to break down and absorb fat. Any condition that results in decreased lipase or bile salts can cause such issues, including: Pancreatic insufficiency, Chronic pancreatitis, Pancreatic cancer, Gallstones or Bacterial Overgrowth.
How to Cure Smelly / Stinky Bowel Movement
As mentioned before, if this is a one-time occurance it is likely this has been caused by something you ate, such as the curry the night before. Try to remember the correlation between what you eat and the state of your bowel movements.
However if this is a chronic recurring event, it is best to seek a medical practitioner as they will be able to define the exact cause and treatment required.