Jason sent a message and asked the Rook if the methane explosions could get through its exoskeleton.
The Rook had extremely high durability, so the chances of anything here piercing through its shell were very low. The Rook looked itself over for any sign of injuries and sent back a message that it wasn't hurt by the attack, and Jason told the Rook and all its subordinates to begin moving again. Now, they were tasked with clearing the path and making sure every single egg was broken before the other members of the Legion made it through!
Jason didn't bother to worry about the poisonous methane in the eggs since he knew that it couldn't hurt his Legion. There was no way to poison a creature that was already dead. The poison was more likely to hurt Jason since he was still human and he told the ant he was riding to hang back so that the poison would disperse before he went through.
The Rook screeched back to its subordinates and told them to begin walking on the floor and ceiling!