I stuttered disruptively in my teens and my twenties. It was extremely traumatic for me as I know it is for everyone who stutters. I’ve worked very hard to put myself in situations where I had to learn to cope. I’ve found that meditation and breathing techniques helped me greatly, to the point where I’m generally fluent unless I get anxious or stressed. When I encounter a stutterer I usually do make it a habit to acknowledge it (as long as it is appropriate) and briefly explain my history with it. The trauma is still with me even though it may not be apparent. I’d just say that you don’t know what people have dealt with. Finding people who empathize with you can only be a good thing for us. They may have something to share with you that could be helpful or helps. At the very least it beats someone looking at you with confusion and horror as you lock up in front of them.