ergonomic typing enforcement

[David L]

I just bought an ergonomic keyboard because my wrists are starting to hurt.
Now that I have one, I am trying to get rid of some bad habits that
I've developed
over many years.  One such bad habit (according to some ergonomic typing web
sites I've seen) is using the same hand to key a modifier and a letter (eg:
left-control and f to move forward in emacs and shells).  Is there a way to
make such key combinations simply not work in fedora?  For example, can
I make it so left control plus [asdfzxcvbqwert] does nothing?

Thanks...

               David