H&S really is to be taken seriously, more people are killed in (or because of) the work place than on the battlefield. There are currently around 2 million people in the UK who are sick or injured because of their work, and aside from the 200 and odd who will die in the workplace and the 1500 who die on the roads each year as part of their work, 50,000 will die as a consequence of those work related illnesses.
But! Not one will have been as the result of a contaminated coffee spoon incident. And thats wholly due to the vigilance of your boss and people like them. Thank the lord.
Unless your kettle has been doctored to prevent the water getting above 70 odd degrees then the coffee granules and spoon will be pasturised by the heat. Historically it was the whole point of making hot drinks – making the water safe to drink.
The alternative, if you're boss prefers, is fermentation. Beer. No kettle, no spoons, no worries. Clyde ship workers used to get through 20 pints a day. And if theres one thing the working class glaswegian male population is renowned for its their longevity and good health.