I heard today an expert say to use Thyme, Tea Tree and Eucalyptus oil as a way to protect against corona virus. Whilst I applaud the use of Tea Tree oil in its natural form on the skin [not taken as a drink] both Thyme and Eucalyptus oil should be first diluted with an oil before used on the skin. The only two oils that can be used in their natural state as an essential oil are Tea Tree oil and Lavender oil. ALL other oils need to be diluted with [at least] 3 drops to 5 mls of base oil such as Sweet Almond Oil, Jojoba Oil or Fractionated Coconut oil. Other oils can be used, but may contribute their essence into the blend.