I was reaidng one of those Cool Russia blogs at one point because i was researching something and it was on epidemiology in the USSR. The article was titled something like “The USSR conquered disease, but is that the whole story?”. It basically talks about soviet immunization campaigns, and then at the end complains that in the USSR the soda fountains only had 2 glass cups people shared.
Nah it’s actually a real thing, it was a real thing in the United States too. My mom’s side of the fam hated the public soda fountains because they thought sharing cups with half the city was gross.