The hydrogen is the poison gas. It may leads to severe health problem. So, this is must be injurious to the human body. The hydrogen is the poison gas. It may leads to severe health problem. So, this is must be injurious to the human body. The hydrogen is the poison gas. It may leads to severe health problem. So, this is must be injurious to the human body. The hydrogen is the poison gas. It may leads to severe health problem. So, this is must be injurious to the human body. The hydrogen is the poison gas. It may leads to severe health problem. So, this is must be injurious to the human body.