From my eyes only

True story:

Several people keep on getting water with their own bottles,
and the top of the bottle directly touched the month of the water machines,
why they can't think of the other people are sharing the same source of water,
for the safety of the good health of all,
to avoid the transmitted disease,
please bring your own cup
thanks!

In a not too big not too small office,
the air-conditioner is on,
however, around 20 persons,
all of them brought their own private fans,
what is the reason behind
why there is no permanent better solution?