Question is too vague. It's obvious that there are appreciable differences in the smell of poop. If you've lived for any length of time you must be aware of the fact that, while always generally unpleasant, the specific smell can change quite a bit. Which makes me wonder if you've fully explained your question.

I feel like you need to provide more context about why you're asking this. Or maybe you're asking whether it's nornal if yours smells different occasionally, in which case the answer is: yes, totally normal.