Nauseous (adjective)

1. Feeling sick or about to vomit.
2. Causing nausea or disgust.

Origin:

Mid 17th century: from latin nauseosus, from nausea "seasickness".

Examples:

1. The smell of spoiled milk made her feel nauseous.
2. The sight of the blood made him feel nauseous.
3. The strong medication made her feel nauseous.
4. He felt nauseous after eating the spoiled food.
5. The idea of going to the party made him feel nauseous.