Sounds like the stuff you've got might be laced. Put that stuff away, and buy from someone else. See if their stuff makes you puke too. If it does, get out the old stuff and sell them both because smoking weed isn't for you. If it doesn't, you'll know your original shit is just that, shit. If that happens, which I imagine it will, throw out the first stuff ((don't sell it..)) and don't buy from the guy again. I've heard of people spraying weed down with WD-40 sometimes to cover scent during smuggling, etc.