Walt was always trying to use science to get himself out of jams. It's one of those nonsensical and charming things in the show.
Just go with it.
I think what people object to is that Gus would be doing anything other than screaming in agony after having half his face ripped off in an explosion......let alone standing up, walking outside, and straightening his tie.
The show drops all pretense of realism and gains nothing for it other than a quick "gotcha" moment.