Help What are some if the methods to use for Carbon dioxid, and will be 100% full proof?

[Zyntkalla]

And I live in an apartment I would need to do it somewhere away from where I live.

 

[justpeachy]

There is no 100% fool proof method that exists as human error exists. There have even been failures with N which everyone thought was virtually impossible. You'd likely need to go elsewhere though as you could harm others living in the apartment. You should review the mega thread on CO too. There's many great options. Good luck.