According to Sue Wilkes' A Visitor's Guide To Jane Austen's England, "Snuff-takers have an inelegant habit of sneezing drips of brown goo, and their faces and clothes become covered in powdered snuff. Jane Austen did not approve of this dirty habit. After a visit to some new acquaintances in London, the D'Entraigues, she wrote to Cassandra (25 April 1811): 'I see nothing to dislike in them but their taking quantities of snuff.'"
I've met plenty of snuff-takers, and none of them have been dirty. Does this mean the charges against snuffistas and snuffers are to be casually dismissed?
I think not. Here is a video wherein I argue that taking snuff is morally decrepit and decadent, while pipe or cigar smoking is manly and virtuous. And I am completely serious.