Acording to this paper/article, its better than technologies such as batteries, but the study isn't the most comprehensive and doesn't consider things like pump hydro.
It usually depends on what app you're using. Desktop and a couple apps display it by default or when hovered. Others might not show it at all because they're built off reddit apps which doesn't show it separated
I thought it was an allegory for disease. Spreads person to person, water repels it and don't invite infected people into your house
Also garlic has antibiotic properties