Its hard to balance the fit/comfort just right. You can remap buttons, update the buds, adjust the EQ, and more. It just keeps popping apart. If you really want to ruin your ears then maybe a few might ask for even more bass, but I did not require it. Very happy with this product! It most likely has something to do with how the Airpods Pros microphones are listening to the sound response inside the ear canal and are likely not tuned to memory foam tips. It doesn?t have a bad smell to it just a new product smell. Again, I am so surprised. No bluetooth problems for me. I expected the slippers to be deeper and more fully cover my feet.