This is actually the 2nd time it's happened, which is what lead me to believe the vomiting was caused by the Alfredosauce.
First incident happened on 12-17 after eating chicken and mozzarella tortellini with alfredosauce at home (everything was store bought). Within 2 hours of finishing dinner the person that I care for was burping a lot and eventually threw up. This lasted for about 2 hours.
The second incident is happening tonight, 12-20 to 12-21. This meal that was consumed came from the Olive Garden and consisted of lasagna, salad, and chickenfettuccinealfredo. Approximately 3.5 hours after dinner more burping and eventual vomiting has occurred.