R.P.
My daughter at 11months was all about her nose. She would stick her finger up her nose crawl over to whoever she could get to just to stick her finger up their nose. She would then remember her fingers also go into her mouth. It is just another hole she has found on her wonderful thing called her head. Just wait until she finds her ears. She will go from ear to nose to mouth to nose to ear and start all back over. She will lose interest soon. It's something new. And telling her no is making her upset because she is just trying to learn and doesn't understand why you are saying it. Yes, it's because she is "picking" her nose but to her she is just learning about a new area. Now if she was actually pulling a booger out on purpose and then eating it okay maybe side track her but at that age nothing really is on purpose for that reason. Hope this helps.