The only problem I find, speaking as the author of a so-called humorous novel, is that Wodehouse, like Flann O'Brien and Tom Sharpe, is several billion light years ahead of what I could ever hope to achieve.
I think its possible to teach people how to write well. There are formulae and tips and tricks which can be demonstrated and learned regarding creative writing. But to write with humour is not something which can be taught, I think?