OT - ''Effluent''
I don't know who started using the word "effluent" here, or when, but it sure has caught on, hasn't it? I never questioned what was meant, but it recently struck me that I've never heard the term used in the context of kitchen ventilation outside of this site. So I googled it, and 99% - if not 100% - of what I found relates to water discharge of one sort or another. Sewage, farming run-off, cooling water from industry, etc. Perhaps someone will quote a respected source that uses the term in the context of cooking, but I'd still maintain that it's not a common usage.
So, my question of the day: What's the matter with discussing cooking "vapor" like the rest of the world does? Vapor, by definition, neatly includes steam, grease and smoke, which is exactly what we're trying to discharge from our kitchens.