I would say that regardless of what you choose to smoke, you should never smoke in the same room as guinea pigs, they have very narrow sensitive airways that get easily irritated- perfume, air fresheners, essential oils, cigarette smoke, and marijuana smoke should be kept in an entirely different and well ventilated room, well away from guinea pigs... I doubt this would be immediately fatal as a one off but it could certainly trigger some nasty respiratory symptoms- seeing a vet now is best, though realistically you may now not be in a condition to drive right now... its always best to view piggy breathing like tiny newborn baby breathing, keep any smoke and respiratory irritants as far away as you can! I hope your piggy is ok...