Okay, absolute worst case scenario. There really is a threat, it isn’t made of wind, it doesn’t leave when you ignore it and as a result, you find yourself in the (very rare) state of being choked into the inky black velvet embrace of unconsciousness. There’s an easy solution to that one too. Just go with it. Don’t fight back, don’t cause a fuss, don’t make any noise, don’t go for your weapon and absolutely don’t make any serious effort to alert any of your colleagues to your predicament.
You see with any luck, the effort of all that choking will see our adversary become too tired to effectively function afterwards. Thus, the next chap he comes across will find him far easier to overpower than you did. Even if not, the one after him probably will. Attritionally, over the course of many chokings, we will wear this interloper down. It’s a subtle, devious tactic, and he won’t see our trap closing until it’s far too late. Though if our opponent is going lethal erm... well, sorry about that.