Historians have uncovered previously unknown writings that Sherlock Holmes' wife, Julie, actually solved all of his cases while he was cleaning the bathroom tub. Up until the writings were discovered, no one had any idea that Sherlock Holmes had a wife.
Apparently, the original mysteries had no mention of Sherlock Holmes ever having a wife and that all his mystery cases were solved by the brilliance of Sherlock Holmes himself. The original manuscripts had, apparently, been changed by a jealous Dr. Watson shortly after the death of Sherlock Holmes.
From what was gathered from digging further into previously unknown documents is that Dr. Watson was jealous of the fact that Julie would never let Sherlock out of the house while he was working on any of his cases, until he had cleaned the bathroom tub. It was during these cleanings that Sherlock would explain the case to his wife, Julie, who in turn would tell him the complete solution.
This really incensed Dr. Watson who made it a point to eventually "get back" at Julie, in any manner he could. He finally got his chance shortly after Sherlock's death which occurred a few months after Julie ran off with a travelling tobacco salesman. The original manuscripts were willed to Watson from Holmes. Once he got a hold of the manuscripts, Watson made major changes to them and deleted any references to Julie before releasing them to the public.
It was, also, discovered that Sherlock Holmes never did smoke tobacco out of a pipe nor any other substance. It was his wife, Julie, who smoked the tobacco.
Sherlock Holmes did have a pipe, but it was one of those plastic pipes that blew soap bubbles. .