I hate it when nobody knows the answer to a question in class but me but I can’t raise my hand

I hate it when nobody knows the answer to a question in class but me but I can’t raise my hand There was a really hard and advanced chemistry question a while ago that the teacher didn’t expect anyone to know because we were nowhere near learning it, he almost had it as a joke. Three students guessed, none were even close, but not only did I know the answer, but also its history, what it used to be called, and fun facts about it, but I couldn’t say shit and he moved on. I told my teacher after class that I knew it and told him some of its history, what it used to be called, and it’s fun facts, but he just chuckled and said ok. The thing is, he is a nice guy, but we all had computers out, and after the question I could have theoretically just found this online, and maybe he chuckled because he thought it was funny how I ‘lied,’ and he probably wouldn’t put it past me because I have another medical issue that seriously impacts my life and especially my academic life but it isn’t adhd or anything like that and is less well known and solutions for its symptoms sound like I am just trying to cheat, and I had already told him that I accidentally got a question wrong on a quiz because of this and asked him to change my grade because of this on two separate tests, and this is just yet another thing that people look down on my for, especially because unlike the stutter it isn’t as tangible so a lot of people think I’m just lying even though I got a medical diagnosis. Another time, same class, teacher was talking about whether or not smallpox still existed, and no one raised their hand, but I knew that it still exists in CDC headquarters and in Russia in I think Koltsovo, but I couldn’t say anything. And of course I wasn’t going to say anything after class, because what would the point be? Just to ruin another person’s view of me due to another misunderstanding, accident, or something outside my control? All the adults who know me well think I’m smart (not trying to brag, just context) and many have told me that to my face, but everyone who doesn’t know me well, which is nearly everyone, thinks I’m a fucking idiot. As my best, and pretty much only friend put it, I was smart four years ago, but have getting progressively stupider over the years to the point he sees me more accurately now. What he is referencing is my stutter and depression both got significantly worse over the last four years, but I am finally progress and yet it is too late. Take this for example, this will again sound like I’m lying, but I shower literally every day and use shampoo and everything, yet my hair is perpetually greasy as hell and I smell bad. I even use deodorant. No point in telling people the truth since they will just think I’m a liar, so I always just walk away or try to change the subject. Something else outside of my control that fucks up my life. Both of these times, especially the first time, I couldn’t have actually shown people that I’m not stupid, since because of my stutter, I’m ether viewed as an idiot who can’t talk or I’m pitied and subconsciously thought less of Another, more relevant time to this subreddit, I use different words by accident to avoid stuttering, that could be synonyms, antonyms, or similarly sounding words, I do it without thinking to avoid stuttering. I once used an antonym instead of the actual word and accidentally seriously insulted someone I wanted to think a lot of me, and I couldn’t explain myself after because of the stutter.