In the above clip a woman has a tick on her arm and decides to drown that tick in peppermint oil. While it does a get the job done of removing the tick one doctor says that doing this sort of thing is dangerous and can actually do more bad than good.
From Dr. Connally:
We don’t want to agitate the tick at all because many carry all sorts of diseases.
Those are actually salivated into the body when the tick attaches and so we don’t want to agitate the tick in any way that is going to make it salivate more and thereby be more likely to transmit anything into you that may make you sick.
Whilst this method may cause the tick to drop off, it may also increase the risk of disease-causing organisms entering the bloodstream of the person or animal the tick is attached to.