(comparative more colloquial, superlative most colloquial) ( 1 linguistics) Denoting a manner of speaking or writing that is characteristic of familiar conversation; informal.  Of or pertaining to a conversation; conversational or chatty.
Cotton dust is often present in the air during cotton handling and processing. Cotton dust may contain many substances including ground-up plant matter, fiber, bacteria, fungi, soil, pesticides, non-cotton matter, and other contaminants that may have accumulated during growing, harvesting, and subsequent processing or storage periods.
This is caused by an allergic reaction to inhaled biologic dusts that are small, 5 microns or less in diameter. Biologic dusts include animal or plant proteins, microorganisms, and rarely low-weight chemicals such as isocyanates in automobile paint. Paint inhalation is not a cause of lung cancer.