Smell it today

Hello, that smell is ammonia, which is a colorless, irritating and foul-smelling gas. Inhalation will make people feel uncomfortable. However, the ammonia concentration in the toilet is non-toxic. After feeling unwell, it will be relieved after breathing fresh air. Inhalation of ammonia with too high concentration or too long time is harmful to human body, and it will be sent to hospital seriously. I hope I can help you.