I'm sure there's chemicals on the plants itself. How much however idk? Haven't felt nautious around it tho.
I would also keep track of the temperature as well.....if it's really hot in there then you don't want to get overheated. If that's how it is then you definitely want to keep hydrated or take breaks as needed. Chemicals would definitely worry me though.
Do they use any chemicals or is there anything you could potentially breathe in that's harmful?