Okay, so I traded a shiny Beldum with a certain person, and after the trade, I found it has pokerus. Now obviously I was happy, BUT.......as the pokerus faded away after becoming metagross, all my other pokemon in the team were affected by it. Eventually, the pokerus on them faded as well, but they now have some sort of "Unhappy Emoji" on the status bar when I view their summary. Why is that?