Please be aware that orf can easily be caught by people and is very very painful in its human form.
It
is painful, yes, but it really isn't as bad as everyone makes out. (Ask me how I know

) About as bad as when you burn your arm being careless lifting a tin out the oven, and carries on being that sore for up to two weeks.
And the good news is, once you've had it, you are immune. I guess I get my immunity topped up by handling the odd few orfy lambs each year...
So yes, absolutely, take precautions and try not to get it. But don't let it keep you awake nights worrying about it, or stop you spending time with your sheepy lovelies.