It's different from person to peson.
My mother complained of nausea after smoling a joint (three decades ago). And swore to never touch the stuff again.
Heard of a similar experience a friend recently went through.
I have some weed with my morning coffe and get slightly nauseated each morning. The problem dissapears as soon as I eat solid food.
According to various articles, marijuana smoke tends to irritate the stomach lining, causing stomach discomforts and dausea. Severe cases can lead to repeated vomiting (moreso in younger users according to some research).
Probably explains some of my stomach problems