Oh some of these "discoveries" they make as they're growing up are seriously horrid aren't they! Oskar actually only fairly recently started to do the nose thing too... but he's 3. He was doing it to the point of bleeding also, however now if I see him doing it I remind him the if he keeps doing it then it might bleed. That does it for him. Not sure if reminding her that it might bleed would help at all?

Reminds me though... lol... my brother was a SHOCKER and my mum put a bandaid across his nose pmsl... seriously she did this!