Verified answer

Not all nematodes are parasitic to humans, but the ones that might get into our digestive systems are. Humans don't affect nematodes, but it is thought that without worms in our guts these days, there are more autoimmune diseases. I would guess that nematodes can send out chemical messages to the lining of our gut, which in turn reacts to the nematode and sends it messages. The human message could make it easier for nematodes to get stronger and less likely to be done in by human intervention. Similar to how some viruses get stronger and more resistant as well a bacteria. So human chemistry could make them more resistant to being killed off, if the nematode like other parasites, learns from the chemical signals our bodies give out.

that's such a ridiculous question, why would you ever need to knoww that?