my way
I just tell them to stop being such a girl (unless they are one, then i replace that with 'emotional') and pull themselves together like any normal human.
Quickly followed by informing them that if it's their vomit, they'll clean it up. And, if i smell vomit I WILL chunder and they can clear that up as well.
It's only a few unusual attitudes and G loads. A spell in the army or prison is what thse people need to toughen them up. I know, I've done both.