I've decided to take just 3 DOTERRA essential oils with me: Lavender - the Swiss army knife of essential oils, On Guard - for germ protection on the plane and in the all day meetings, and Peppermint for headaches and upset tummy cures.
There are plenty of others I'd like to take, such as Geranium for hormone balance, Serenity - the name says it all, Lemon - for my drinking water, Deep Blue - in case I injure myself, and Eucalyptus - for the sniffles.
All that air conditioning, recirculating air, and close proximity to other people can be challenging to the healthiest immune system. Essential oils are a proven way to cut your chances of getting sick.