Professor Lafay said it was fine. Annabeth repeated teacher's words in her mind, relieved. Her head was aching, but she was feeling better, at least she wasn't dizzy anymore. She was trying to figure out why she fainted when it became clear in her mind: she wasn't eating properly since she noticed people were acting strange. Years ago she had suffered food poisoning and since then she avoided eating when there was a slightest indication that it could be happening again.

What's next instruction? The potion started to bubbling.