Effects of H2S on the Human Body

Just the smallest amount of hydrogen sulfide can have huge effects on the human body. H2S is measured in parts per million. One PMM means one part gas per one million parts air, that’s nothing right? Wrong! H2S starts to wreak havoc at just 0.01 PPM. Let me break down just how deadly this gas really is. (Oh geez did I just say “deadly gas”?)

0.01 – 0.3 PPM – This is called the odour threshold and it smells like rotten eggs. You know the guy that eats egg salad every day in the lunch trailer… It smells like him.

1 – 20 PPM – The egg smell is even more offensive, causing nausea, tearing of the eyes and headaches.

20 -100 PPM – There is nose, eye, throat, lung and digestive irritation, accompanied by the loss of appetite and smell.

100 – 200 PPM – Nose, throat and lung irritation is now severe. Your sense of smell is completely gone now.

250 – 500 PPM – Fluid will begin to build up in your lungs.

500 PPM – Excitement, staggering and sudden collapse is possible now, along with loss of your memory for exposure time, dizziness, unconsciousness and death within a few hours.

500 – 1000 PPM – Respiratory paralysis, irregular heartbeat, collapse and death without rescue.

Over 1000 PPM – Immediate death. Game over, you didn’t have a chance.

Talking about “deadly gas” can be kind of funny, but H2S is absolutely no joke. Make sure you’re trained before entering any area that may contain any amount of H2S. For more information click here.

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