Breathe in there's an unbearable sharp pain.?

It doesn't happen often but I've had it happen a few times. I will be sitting, doing nothing strenuous and I will breathe in and a sharp pain in the right side of my neck kinda mid ways down will make me gasp in pain because it hurts so bad and it's so sudden. Then it's gone. Nothing weird happens before or after. Just comes then goes. Any ideas? (yes I smoke)