is breathing essential oils toxic
Toxicity Of Essential Oils. Certain constituents of essential oils are very toxic, particularly to vulnerable people like the old, the very young, and pregnant women. On the whole, this toxicity of essential oils applies to an oil when taken internally, which is something I am passionately against. Certain of these toxins in certain oils can be dangerous when applied externally (or inhaled), and I have given clear warnings where necessary throughout the book.