You can get intestinal viruses, however.
For example, Mike threw up...then a day later, Jake was...then last night, I was...now my bf is in bed sick. None of us have eaten anything the same.
AW, if it means anything, last night around 4am, I was sitting on the toilet while leaning into the bathtub. Hang in there. And, if you live with someone, make them look after you. There is nothing worst then being all alone and puking all over your bed...then sofa...then carpet...then bathroom sink.