Ha anyone reported airbag deployment without collision for 2014 Q50?

Hello, you can surely bring up your concern with your local Infiniti dealership. They may have some technical data and resources that could speak to what happened to you, and could also check into the restraint module data log to see what may have happened, if recent enough. That said - your vehicle is no longer under any kind of warranty, so you'll likely have to come out of pocket for whatever needs to be done.