Take a deep breath of air. Seems fresh, right? Unfortunately, air isn’t just oxygen and other gases. Every lungful of air contains tiny, suspended particles called aerosols. Some are harmless, but some… not so much. Thanks to advances in air sampling and filtration technology, we have techniques to detect aerosols and reduce their presence indoors, and further research is ongoing to improve current devices. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

What are aerosols?

By definition , aerosols are a “suspension of solid or liquid particles present in a gaseous medium”. That means smoke from a wildfire is an aerosol, and so is the annoying pollen that floats in the summer breeze, causing hay fever . Aerosol size can range

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