Couple of weeks ago I opened a new pack of espresso ground coffee and poured the contents into my storage tin. Then left the empty bag on the worksurface with the open end, by chance, pointing towards my CO detector (which sits on the worksurface). Within a short space of time the alarm went off. At the time I had not realised that ground coffee could have that effect and started checking appliances, but quickly guessed that the coffee might be the culprit.
Next time I opened a bag, I deliberately left the bag in a similar position and, lo and behold, the CO ppm (parts per million) started climbing on the display.
And having done some research it does seem that roasted coffee does indeed release CO. So you learn something new......
Quickbeam I would err on the side of safety and don full NBC gear whilst manfully holding a stirrup pump in a relaxed, yet ready, position. Having said that I don't drink coffee, hate the taste actually but thought I would add my two pennorth ;o}
Before drinking any tea you should ensure that it has been made with absolutely boiling water, from a certified potable source, to make sure any micro organisms have been neutralized.
The tea itself should come from certified plantations and processors, handed only by workers who have the necessary hygiene certification.
Any additions such as milk and sugar should fulfill the same requirements.
Any utensils used should have a full maintenance history with current certification where required. This will include PAT testing for electric kettles and gas safety certificates for gas cookers.
They should also have a full hygiene and sterilization record.
Containers of hot tea should only be lifted when the handler is in a fully stable position, and handles should have a regular adhesion check. The container should display a "Danger - Hot Liquid" warnings in such a way that a warning is visible from whatever angle the container is viewed. A further assessment is to be carried out, and recorded, to ascertain whether this warning should also be displayed in language(s) other than English.
(Well you did ask! Making yourself feel important while stopping people enjoying themselves? Nothing easier. Like shooting fish in a barrel.)