I have a horrible poo smell from the kitchen sprayer. I told my husband I think there might be bacteria in the hose and I could maybe soak in it for a while and kill the junk. He states the hose will not come off. Never heard of that. Is that common?

No they do come off. There are different methods for attachment but they do come off. I'd just buy a replacement but you can try soaking in bleach and water. Give me the brand and model and I can help further