Smog is dirty air that looks like a mix of smoke and fog. It can make people cough and is bad for health. It often happens in cities with many cars and factories.
The city has bad smog in winter.
Smog makes it hard to see outside.
This meaning is about smog as a weather problem. It makes the air thick and hard to see through. It happens when smoke mixes with natural fog.
The morning smog was very thick today.
Drivers move slowly in heavy smog.
Here, smog is used as a funny way to say something is confusing or unclear. It is not about air or pollution but about ideas or speech.
There is smog in his explanation.
The story was full of smog and hard to follow.
Smog is also a company name for bicycles in Britain. People may say 'Smog bike' to talk about these strong, good bicycles.
He rides a Smog bike to work.
The Smog bicycle is very light and fast.
Smog is a word created by joining 'smoke' and 'fog' to describe air pollution visible as a thick cloud. It is often found in cities and studied in science.
Smog forms when smoke mixes with fog and sunlight.
Scientists study smog to help stop pollution.
