[Question] Should I suspect a disease just because my stool smells bad?

My family member's stool smells a bit bad.
It doesn't seem like you have any particular problems or difficulties doing your work.
I'm a little worried that the smell might be too strong.
Even if you spray air freshener and ventilate, it is still quite toxic.
You are eating something other than your regular diet to control your blood sugar.
I'm also wondering if this is more of a problem. Could it be because you eat a lot of vegetables?