You need to get protective gear armor that prevents against burns like the craftable blackmith apron and firesuit or the scavengeable oven mitts, welding mask, firemans hat and jacket etc and have them equipped when you are recycling or smelting anything. Hopefully that helps :) I too learned the hard way lol

But it is better to first raise the medicine to 10, and then protect yourself from the burns. In total, you need 6 ragged rags, which need to be washed and disinfected in boiling water. Well, a little more food))