Is hydrogen harmful to breathe?
Accidentally breathing a small amount of hydrogen won’t harm you. Hydrogen is non-toxic to humans, animals and the envionment. Like other commonly-used gases, hydrogen displaces, or pushes away, oxygen. If the oxygen you were trying to breathe was displaced by so much hydrogen that you were breathing very little oxygen, problems could result. Since hydrogen disperses (rises and spreads out) very quickly, there s a very low risk of breathing too much.
