Ive puked off it before. I've smoked it quite a lot but i did throw up once in my early days. It was on strawberry shisha, it was a very sickly flavour tbf and it was only my 4th - 5th time smoking it. it was at a shisha bar too, i went outside and threw up in the bin outside in front of the windows - i felt a bit guilty lol. but the owner bought me in and said it's happened before, its something to do with the smoke thinnin or thickenin ur blood or something. Anyways, the owner gave me a glass of water and put a few teaspoons of sugar in and told me to drink it and it would sort me out and it did.