The idea most likely came from the topic about gelatin and sore joints. In the sense that if someone with osteoarthritis tries to eat gelatin in order to grow new cartilage instead of the patient, then a similar approach will work with the ears.
Is it possible to grow cartilage in the nose and ears
Can. But for this you need to get sick with acromegaly. In this disease, the pituitary gland secretes too much growth hormone, and the person's extremities grow back. Including nose and ears.
Can cartilage grow from gelatin?
No. I would like to. True, I would like to. So it would be possible to correct sore joints. But it doesn't work. It doesn't work that way.
Gelatin is an animal protein. If we eat it, it will be digested in our intestines like a piece of meat. The result is amino acids.
These are the simplest building blocks that our bodies use to make protein. The body will metabolize these amino acids, but they will be no different from amino acids from any other protein source. It's a shame, annoying, but... okay. We will eat jellied meat as an appetizer. It won't hurt our ears.
Honestly
To be honest, brothers, the more damage to the ears and nose will be from piercings. I constantly see how someone or keloid scars grow back, or something is festering.
If the cartilage in the ears becomes very inflamed, it can become like a rag. Have you presented? Ears droop like a puppy. Careful with piercings!
What about jellied meat?