There Are Pandas, and Then There Are Pandas.
And this isn't either of them! The Pandas we're talking about here, are watches, not bears. And what got me thinking about them (again) was a link posted this morning by @cm.rook who pointed a few of us to the very attractive (and not terribly priced) Yema "Rallygraph" Panda which, in it's most traditional arrangement, looks like the one on the left, but can also be had in the version on the right: The model on the left is a true Panda, while the model on the right is called a reverse Panda. The reason for that distinction is clear--Panda bears, only come in the first arrangement. Now at this point, everyone should be thinking about the most well-know Panda, The Rolex Panda, which is actually a Daytona, and among Rolex Daytonas, the most famous of which is the Paul Newman Daytona, which was famous first, because it was Paul's, and second because it sold at auction for $17.8 million (US Dollars). The story of that auction is well-known so I'll only...
Nov 8, 2019
If you're afraid it's mold soak it with 1-2 tbs of baking soda in just enough hot water to cover all the parts. It's a natural anti-fungal agent. Remove from the water when cool enough to touch then take a toothbrush and brush everything off (it may be helpful to add a little extra baking soda to the toothbrush for extra scrubbing power). After that, if you want, then soak it in vinegar and hot water. Hit it with the toothbrush again. If it's still not gone to your satisfaction, you can soak all the NON PLASTIC parts in a mild bleach solution. Rinse that well and then hit with the toothbrush again. I doubt there will be anything left alive on the parts after the baking soda and vinegar.
If it's hard water spots/scaling soak all the pieces in a lot of lemon juice, a citric acid & water mix, or a descaling agent. Those spots are completely harmless, but removing them may improve your coffee.
You're prooooooooooooobably being overly cautious. There's not much for mold/mildew to eat on coffee equipment unless it sat wet and covered for a long time.