Dodder is a parasitic plant, one of the few plants without roots.
It doesn't look like any plant we know. Plants have leaves, roots and chlorophyll.
Dodder looks like thin(flesh colored) spaghetti entangled in its host plant.
It eventually kills its host.
It is quit uncommon in the East coast,.My experience with controlling it in Upstate NY was starting a controlled fire and burning it out along with the affected host. This keeps it from spreading. To my knowledge dodder is propagated asexually with small pieces breaking off and attaching to a new host plant. It can be carried by birds.
When you come across it, best to eradicate it.