Enter a clue or pattern or both:

The Clue

Pollution factor (4 letter answer)

The Answer

SMOG

Tags


Notes

The answer SMOG is seen frequently, appearing about once every 100 puzzles.

Related Clues

Air apparent?
Air pollution
Choking cause
Cough cause
Environmental portmanteau
Fog and smoke
Forecast for L.A.
Kind of alert
L.A. woe
Metropolitan menace
Pollution ingredient
Pollution item
Pollution problem
Portmanteau word
Scenery spoiler
Sun blocker
Unwelcome cloud
Urban blight
Urban haze
Urban miasma
Urban pollution
Urban problem
Urban woe
View disrupter
Weather condition
Cause of an air alert
One cause of heavy breathing
Effect of auto exhaust
L.A. weather word
Problem of urban U.S.A.
Smoke plus fog
Some air pollution
Cause of a bad air day?
Cause of some urban coughs
Factor in an air quality rating
Pollution that may sting the eyes
Possible cause of heavy breathing
Problem in "La La Land"
Target of clean air laws

Definition

SMOG as a noun:

1. (smog, smogginess) = air pollution by a mixture of smoke and fog