Considering Conan was currently doing his best to stay at least ten feet away from Sherlock at all times, the answer was no. Sherlock might have figured out that Conan was lying about his age, but Conan had no intention of supplying any more answers. With his luck, the first memory Sherlock would see would be that night.

He fights to conceal his wince at the question.

"No. It happened a while ago, so it isn't really important now."

And it wasn't. He'd just prefer to avoid questions about it.