Question

question answer 1. a gas without smell/scent
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Answer 1

Hydrogen, carbon dioxide, and methane make up as much as 99 percent of the gas produced in our large intestines by volume. (They're supplemented by air you swallow — more on that below.) All of these gases are odorless, which is why much of the time, farts don't actually smell at all.

Answer 2

Answer:

Ans. Hydrogen, Methane etc.

Explanation:

Generally these gases are odorless means don't posses any smell or scent. Or we can say say they don't have any Aroma.