Are these sentences OK?
I think I'm poisoned by something I ate.
I'm starting to be uncomfortable with this conversation.
I'm sorry something like this happened to you.
I don't want something like this to happen to me.
You can't smoke in here. Don't you see no-smoking sign?
I'll try my best, but don't have any expectations.

Question

Answer

5. Don’t you see the no-smoking sign?
6. But I don’t have any expectations. Unless you intended to say ‘but don’t (you) have any expectations. It is written correctly if this is what you are intending to say.

Answer

I think I got food poisoning from something I ate.
I'm starting to feel uncomfortable with this conversation.
I'm sorry something like that happened to you.
I don't want something like that to happen to me.
You can't smoke in here. Don't you see no-smoking sign?
I'll try my best, but don't have any expectations.