Things that couldn't be cured with a bezoar... well, unfortunately, the mention of that just made Marek wonder whether it could actually be done. He didn't intend to try it, though. He wasn't sure there should be a poison that couldn't be cured with a bezoar, but it was an interesting idea in theory, all the same.
"Sorry," he said, shifting to rest his head against her shoulder. He would have promised to be more careful, but he knew himself too well; if he got all caught up in something interesting and risky, he didn't always remember to worry about his own safety. Not that he would have actually taken a drink from his cauldron tonight on purpose, or anything, but accidents happened. "I know. For the next stage of it I'll be wearing much more protective gear, because I need to turn it into a poison gas. I promise I'll be careful."