What was the main focus of John Hess Thayer Sylvester's work regarding air treatment?

Answer

Managing smoke and preventing disease spread in essential environments like operating rooms.

Sylvester's work centered on foundational ideas about controlled air movement and filtration aimed at preventing disease spread and managing smoke in critical, localized settings.

What was the main focus of John Hess Thayer Sylvester's work regarding air treatment?
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