Search ammonia and sulfur smells in bowel movements, and see if any typical causes match your current dietary habits or medical status/medications including supplements. If they don’t, see a doctor, then get to a gastroenterologist, if you can. Maybe just do that, anyway. Regular checks, and digestive health are extremely important, regardless of weird poo and especially because of weird poo, no matter how uncomfortable, it’s more comfortable than the alternative. Source: life of intense health problems. Get your butthole checked. We believe in you.