Peppermint
It is commonly known that peppermint leaves have therapeutic properties. Menthol can be found in this common herb. The menthol in peppermint can ease throat discomfort and may even make breathing seem easier. There is a lot of usage of this essential oil for congestion relief, but there isn't much proof that it works. Even though a study found that menthol does not actually reduce symptoms when inhaled, people who do so still report feeling better.
Both consuming peppermint tea and breathing in the vapor from a steam treatment have advantages. You might want to try inhaling peppermint essential oil with your diffuser or a bowl of steaming water to feel relief from your cough. Add 7 or 8 drops of peppermint essential oil to a cup of freshly boiled water to make a steam treatment. Take a few deep breaths directly over the water while putting a towel over your head.