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The Gas Odor Smell? Ask Annie

The Gas Odor Smell?  Ask Annie

Dear Annie, I heard that because gas is odorless a scented toxic chemical is put into it to alert people to the danger of a gas leak. Is this true and what is the chemical? –David, TX

Hi David. Yes, this is true, and I know about it because I happen to be one of the population that is very sensitive to it since it is a recognized neurotoxin and I tend to be sensitive to that class of pollutant. The scented chemical used mostly is methl mercaptan, a chemical in the sulfur family, but some more rural areas use what is a more neurotoxic version. Besides being a neurotoxin mercaptan is a recognized respiratory toxicant. Needless to say, when you smell “gas” it is important to report it right away, both so you don’t get exposed to gas and mercaptan.

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Annie B. Bond

Annie is a renowned expert in non-toxic and green living. She was named one of the top 20 environmental leaders by Body and Soul Magazine and "the foremost expert on green living." - Body & Soul Magazine, 2009. Learn Annie's latest eco-friendly news on anniebbond.com, a website dedicated to healthy and green living.

13 comments

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1:30PM PDT on Jun 15, 2015

What is amazing to me is that most people don't realize that ANY propane tank, large or small, has an emergency relief valve, to keep it from exploding in high temps. It can let off small amounts of propane and this scent at almost any time.

5:50AM PDT on Jul 22, 2012

Noted....

9:34PM PDT on Jul 21, 2012

If it smelled good people would think it was air freshener.

9:29PM PDT on Jul 21, 2012

It is instantly recogniseable, stinks like billy oh but has saved countless lives.

4:03AM PST on Mar 3, 2012

I can't tell you the number of times over the past 20 years I've smelled gas coming from outdoor meters. One time I smelled it coming from under the ground near an outdoor meter. In all cases the gas company acknowledged that there was a leak and they fixed it. Without the added smell who knows what would have happened.

5:43PM PST on Mar 2, 2012

I do not understand Why they couldn't add something that is NOT a neurotoxin, I mean, how hard could it be??

4:03PM PDT on Nov 3, 2011

Thanks!~

4:03PM PDT on Nov 3, 2011

Thanks!~

4:21PM PST on Feb 5, 2010

I had heard that too

3:17PM PST on Jan 13, 2010

I believe adding this "odour" to gas to be essential as it alerts you to discovering a gas leak instead of suffocating from the gas itself.

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Disclaimer: The views expressed above are solely those of the author and may not reflect those of
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