> Hydrogen sulfide is highly toxic (it's comparable to carbon monoxide) It's a bad comparison since CO doesn't smell, which is what makes it dangerous, while H

> Hydrogen sulfide is highly toxic (it's comparable to carbon monoxide) It's a bad comparison since CO doesn't smell, which is what makes it dangerous, while H2S is detected by our sense of smell at concentrations much lower than the toxic dose (in fact, its biggest dangers comes from the fact that at dangerous concentration it doesn't even smell anything due to our receptors being saturated). It's not what's being put in natural gas, but it wouldn't be that dangerous if we did.