Can you kill yourself with a gas fire?

[stopmesuffering]

If I run my gas fire without the flame and stop up the vents would this work?

 

[Hollowman]

Maybe, or you could survive and suffer horribly.

 

[MyShadow]

If I run my gas fire without the flame and stop up the vents would this work?

I don't recommend this method. First, there's no guarantee that you'll die but instead put yourself at risk at being horrible burned and/or disfigured as the gas ignites. All is takes is for someone to turn on a light or for a pilot light to switch on.

Second, you would be creating an opportunity for a huge explosion in your house, putting everyone nearby at risk.