> Protein present in peanut butter come from the plant that produces peanuts, which is just as alive (if not more) than microorganisms. Right, but peanut butte

> Protein present in peanut butter come from the plant that produces peanuts, which is just as alive (if not more) than microorganisms. Right, but peanut butter itself is not alive. I never claimed that it's inorganic, only that a morsel of peanut butter is not a living creature, and specifically not a living creature that makes (most people) sick. > Your immune system has no notion of whether an antigen is alive or not. One way or another, it makes no difference. This is also what I was trying to convey, albeit in laymen's terms. As I understood it, the person I initially replied to wondered what would happen if your immune system reacted to a(n organic but) non-living substance. And the answer is that your immune system still reacts, but the reaction doesn't accomplish anything useful or necessary, and that's why no one likes having MS or a pet dander allergy. At least when your immune system reacts to a coronavirus, it's for a good reason—to clear out the virus.