It was the only reason that Bellamy hadn't touched the candy. There could be adverse symptoms and shit to the stuff. Though, the moment that Murphy popped off about Mount Weather Bellamy had to take a step ahead of them. It was either step away from Murphy or deck him. Or kill him again. Just this time the red sun toxin would have nothing to do with it.
He just focuses on walking ahead, but knowing where the other two were at. Just the thought of Murphy even bringing that up has him clenching his jaw until it hurts.
"There's a path up ahead, looks like it heads straight for the mountain."