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I can be extremely dangerous

I can’t be seen or smelt

I cause people to be confused

And I could even be in your house!

What am I?

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1 Answer 1

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You are

carbon monoxide

I can be extremely dangerous

Lethal, in fact.

I can’t be seen or smelt

It's a colourless and odourless gas.

I cause people to be confused

Symptoms include dizziness and confusion.

And I could even be in your house!

Occurs naturally in the atmosphere in small amounts.

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  • $\begingroup$ Also it can confuse people about the effect on climate change $\endgroup$
    – yunzen
    Jan 28, 2019 at 8:32
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    $\begingroup$ Safety warning on the last point: look closer at the article you linked in the second last point!! $\endgroup$
    – deep thought
    Jan 28, 2019 at 13:53

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