From the "What Was I Thinking (and What Was I Thinking With)?" Department

[penfield]

This message brought to you by "Britney and Kevin: Chaotic," appearing Tuesday nights at 9:00 on UPN:

You should never say that something makes you "nauseous." To be nauseous means to engender nausea. To wit:

WRONG: "Kevin's facial hair makes me nauseous."

RIGHT: "Kevin's facial hair is nauseous."

EVEN MORE RIGHT: "Kevin's facial hair looks like caterpillar feces."

If you want to say that you are feeling nausea, you would say you are "nauseated," i.e., "I am so nauseated by this show that I have to go outside and puke on my lawn for about three hours."