Cymbopogon winterianus WITH CITRONELA INFECTIONS AND BUGS AWAY. Lemongrass essential oil is wonderful for combating viruses, bacteria, parasites and insects. And if this seems little, It also works as a deodorant. All in one! They say that in the Antilles, every house has a citronella plant in the window to maintain good health at home. essential oil as well It is used to relieve the pain of rheumatism and arthritis, and to treat acne.