I've had antibiotic resistant c-diff 4 times. Each time I had to have stool transplants to treat it. The first time I had Cdiff I didn't notice any smell. But the last 3 times I've noticed a very sulfur smell, like rotten eggs. I currently have Cdiff now. I somehow have some rare form of Cdiff that my gastric specialist called "microscopic Cdiff" that never really goes away. I have flair ups every 6 months to a year. Each time I've been hospitalized for 1-2 weeks. It's a horrible, painful illness. It feels like someone is literally stabbing you with steak knife in the gut all over.