Donald Trump: “It goes through air, Bob, that's always tougher than the touch. You know, the touch, you don't have to touch things…”

“It goes through air, Bob, that's always tougher than the touch. You know, the touch, you don't have to touch things, right? But the air, you just breathe the air and that's how it's passed and so that's a very tricky one. That's a very delicate one. It's also more deadly than your -- you know -- your even your strenuous flus.”