was the first to research microbes and their activity within the air. Prior to Pasteur's work, laboratory cultures were used to grow and isolate different bioaerosols.

Since not all microbes can be cultured, many were undetected before the development of DNA-based tools. Pasteur also developed experimental procedures for sampling bioaerosols and showed that more microbial activity occurred at lower altitudes and decreased at higher altitudes.

Types of bioaerosols

Bioaerosols include fungi,

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