Home safety · Home and routines

carbon monoxide

dangerous gas

A poisonous gas that has no colour or smell and can come from faulty heating.

B2 now and then speech & writing

This vs that

the gas is impossible to detect by smell

Carbon monoxide has no smell.

you can usually notice it

Smoke is easy to see.

Hear it in real life

Why do we need a carbon monoxide alarm?

Because carbon monoxide has no smell, so you might not notice it.

Play the conversation

We had a carbon monoxide alarm fitted after replacing the old boiler.

Which sounds natural?

Psst — which one would you actually say?

The mistake everyone makes

Not: Carbon monoxide is a poisonous gas which has colour and smell.

Say: Carbon monoxide is a poisonous gas which has no colour or smell.

Use 'no colour or smell' because the gas is undetectable without an alarm.

Build it

How it fits in a sentence.

carbon monoxide; carbon monoxide poisoning; be exposed to carbon monoxide

Phrases to borrow

More for talking about home safety.

keep something out of reach

Keep cleaning products out of reach of children.

check for signs of

Check for signs of damage before using the ladder.

Home safety words

Home and routines · Home safety: the words around “carbon monoxide”.

More connectionsMore home safety words8

Your turn: say it out loud

Carbon monoxide is really dangerous because you can't smell it.

Say it out loud two or three times, until it feels like yours.

carbon monoxide

dangerous gas

“We had a carbon monoxide alarm fitted after replacing the old boiler.”

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