Hi friends! I picked this monstera up at Walmart within the last few weeks and I love it so much. It has been happy and growing new leaves! 😍 I went out of town last week for a trip and came home and noticed these brown spots on the bottom of its leaves. It’s possible they were there before and I just didn’t notice, this is my first monstera! They do wipe off like dust/dirt-ish material but they leave behind faded yellow spots. What are they? What should I be doing to help? It also has this very large spot on this leaf in the photo when I brought it home. All tips and advice appreciated!! Thanks!!!

