Theoretically electrolysis of water yields Hydrogen and Oxygen in gaseous form. But to enhance conductivity we have to add an electrolyte like $\ce{NaOH}$ or $\ce{KOH}$.
Does this produce any other gases along with Oxygen? Does $\ce{Na+}$ or $\ce{OH^-}$ ions also come out as some form of gas? Or practically speaking can people breathe the oxygen which comes out of electrolysis?
What are the gaseous outputs of electrolysis of Water along with $\ce{NaOH}$ or $\ce{KOH}$?