smoking after anesthesia

It's not ideal to smoke anything after anesthesia. People do it, but it'd be better if they didn't. For one thing, you're trying to let the anesthesia and various sedatives they give you work their way out of your system, not add more new substances. Then it's important to keep the lungs clear and smoke free after anesthesia. Weed smoke is a strong irritant. Patients are at heightened risk of developing pneumonia after they've had anesthesia, so clear, clean lungs help ward that off. Then, just like Crispi said, people's throats are already irritated from the breathing tube, and that lasts a couple of days. It's just best to take a brief smoking break from both cigs and weed.

I have to second Birdgirl on this one... I would wait at least 12-24 hours before smoking.

I dont know about anathesia, but after I gave blood I was told not to smoke for at least an hour. I smoked anyway and I felt great, like I was completly mellow. It probably wasn't good for me but it didnt cause any unwanted effects. I would say not smoking is only a safety measure and its up to the individual if they want to take chances.