What are the “salad days”Violet refers to in the chapter “Salad Days, w/ Sneeze Guard”? Why can this period of time be considered their “salad days”?

"Salad days" is a positive thing..... it's the time when things are better than ever. The time in the hospital can be considered "salad days" because it's a playful time filled with memories and conversation..... time uninterrupted by the feed.