Sales of air purifiers have increased significantly, with some retailers reporting a jump of up to 70 percent. This surge in sales is attributed to haze.

Further information on this trend can be found through CNA. The increase in air purifier sales is a notable development, and more details are available from the source.

The reported increase in sales highlights the impact of haze on consumer behavior, with many seeking ways to improve indoor air quality. For more information, readers can refer to the source.