You sure that wasn’t an alcohol free beer? Unless it’s de-alcholized beer, a non-alcoholic beer is stopped being brewed before a lot of the sugar from the yeast is turned into alchohol.
So they tend to be sweeter unless they add some additives, and they taste like stale alcohol as well, that could have been the disinfectant tinge. As they are still 0.5% alcohol typically.
I can drink beer, but after working on and off at a distillery for a decade as a contractor, the smell of vodka/whiskey just makes me gag.